"You're just jealous" is something you'd say to another 8 year old, not a solid defense of crypto. It's quite telling you had little else to point to.
It wasn't supposed to be a defence of crypto. I have no need to defend it and there are plenty of reasonable criticisms of it. I was just trying to explain the kind of unsubstantial attacks on 'crypto' we see frequently (e.g. this post). "You're jealous" may sound childish but that doesn't make it untrue.
Maybe I'm not explaining it clearly enough. The jealousy isn't that you've been rich enough to buy a picture of a monkey. It's that you have so much 'money' that you can spend it on something so stupid and not even care. And the fact that you've gotten that money by doing something so seemingly stupid and worthless in the first place. That's pretty infuriating for a lot of people.
I also didn't mention 'regular joes'.