It attracts people who want to make money easily. A crazy amount of people who have no idea about the tech aspect of crypto are "investing" and active in crypto social groups. Just go on the major subreddits and read a few threads, it won't take long to see that a very large portion of them are kids/teenagers who invested a few hundreds or less in the hope of a 1000x pump, these are the people who get scammed.
Everyone says they're here for "the project", "the future of currencies", &c. most of them are here to make a quick buck
Stop chasing the easy money. In fact, stop thinking about money all the time.
Stash a little money from your paychecks into a 401k and a Roth IRA and invest in passive, broad market ETFs. Hold no matter how the market is feeling this week. Don't trade on margin, don't stock pick, don't daytrade, and stay away from options.
The buy and forget way to wealth is a much surer path than the risky one.
Honestly, I wouldn't bother putting my money into a 401k - I would stash it away, let a little rot away with inflation and use it to start a business that provides real people with a real product and pray. That seems like a more sure-fire way to get across the line.
Ostensibly, that can be thought of as a more extreme version of your "pick an index and stick in it" approach. The reality of it is that we don't know which one of these choices is the right one - it may be so that cryptocurrency will make you trillions! Or that the Roth IRA will have 70% of the people who stick their money in it as actual millionaires despite them only making $70k a year for 30 years.
Don’t get me wrong. Starting a business is a bet in yourself which is always good. I think people who are interested in the life style should definitely do it, just not by using all their retirement savings.
Then the owners take the $2M they got in early financing or seed money or reservations or whatever it's called and disappear with it.
It's obvious, socially/culturally, that this is a scam; why would anyone give people money after they get money?
But logically, no. This is not a "logically refutable scam". Unless you misunderstand what logic is.
But, to engage with your implied argument in good faith: Do irrational people deserve to have all their money taken from them?
My argument was that any rational person should be able to conclude it's a scam. That's really the extent of my willingness to engage further.
You simply need premises (i.e. assumptions) to make use of deductive logic in a standard logical system. Those premises, when used with logic that has no fallacies, implies conclusions. Any real world conclusions are always based on premises, where those premises are based on experimental evidence. It's always the case that there could be problems with the experiments, and there always are limitations of those experiments. That doesn't mean you can't use logic to derive conclusions.
It's very common to give away new cryptocurrencies to seed them and build popularity with them, even in a non-scammy way. RaiBlocks (eventually renamed Nano), for example, started this way. Eventually that currency (mostly) ended in a giant heist because the biggest exchange for that currency had its entirety of value "stolen" (embezzled by the exchange's operator). https://en.wikipedia.org/wiki/Nano_(cryptocurrency)#BitGrail...
Naive users who know very little about cryptocurrencies but who want to get into that market (think your parents, if they're technically literate enough to use the internet) will genuinely be persuaded by giveaways.
It's becoming a common scam practice to give people free cryptocurrency tokens (or at extreme discount), and make it so people can only sell those tokens by buying other tokens. This happens over and over, and actually got some reporting on it with the Squid Game tokens (not associated with the actual Korean media drama): https://www.bbc.com/news/business-59129466
So sure, you could technically make a "logical" argument about anything you want with the right premises, but if those premises are not based in reality, then the conclusions don't hold in reality. Those are called apriori arguments. Because the statement that "no one would ever give away cryptocurrency for free" is a strictly false one.
If you add the context of "More money is better", "Value is gained after gaining money" and "Money has value", it seems to perfectly fit into logic. Prove me wrong if I am, I would appreciate it - I am not a Haskell programmer, so I think I could learn from it.
Now they hear another of those stories that don't make any sense at all. But this time with a peculiar tweak, they might perhaps be the protagonist themselves! Two wrongs don't make one right, so far so good. But what about two utterly confusing?
If so, then why are these logically refutable scams ("Give me 1btc and I'll send you 3btc back!!!": Just think that the person would, if they can generate 4btc of value out their ass like that, simply likely keep it, whether they valued the fiat value of it or not) so common?
I understand the idea that the emotional gain from giving something to someone who has never had anything of that value may be overwhelmingly tempting or fulfilling on the "giver's" part but similarly, aren't there people more deserving of this than you, the "scam" victim? At that point, I don't even know if I would call it a scam.
If someone posed as a verified conveyancer and built a fake profile, payed legitimate businesses and entities off for positive testimonials etc. And encouraged me to hire them to re-mortgage my property for me then I would call that a scam - but someone asking for money with the vague promise that "they need it more than you" not so, similarly not with a "I will give you double the money you give me" scheme. It just feels more like something so stupid that you are entirely at fault if you fall for it.