Yeah, it's not like I can go on to /r/bitcoin and read multiple dedicated screeds along the lines of "I'm recommending my friends to invest savings in BTC for retirement". Whereupon someone replies "They should keep something in a Roth IRA for diversity", and the OP comments, "What's a Roth IRA?"
Yes, there are sophisticated investors.
But in a lot of cases, the only thoughts going through peoples heads is "Get Rich Quick". There's more discussion of "what color Lamborghini am I buying?" than anything else on those forums right now than anything else. Well, beside 'HODL! HODL! Even if the market corrects $10,000 tomorrow, HODL!'.
Most of the time it feels like these discussions are stuck rehashing old arguments in circles, but this was truly innovative. Thank you for not being predictable.
As for the argument itself, I think you are correct not to make any investment decisions based on what you described.
Now THAT is the speculation to end all speculations.
Whatever technology replaces Bitcoin is likely something you can buy with Bitcoin. That's why people rush to buy something which obviously isn't "ready" (but maybe "good enough"). It's speculative, but do not think that people who invested a lot in this didn't think this through at least as much as you have.