All in? HELL NO, nobody should go all in, regardless of age. Taking higher risks when younger--that's all well and good. But going all-in on anything crypto is a recipe for bankruptcy. I wouldn't even allocate 20% to crypto. You'd have to be crazy to go even half-in, and I say that as a person who likes bitcoin. A lot. It's just way too risky.
True. Just as what Warren Buffet had said before, "don't put all you eggs in one basket." You can say that young people has the means to risk it all because they are still young, but that does't mean that risking to lose all is good for young people, actually for all being alike. Spread your investments in various forms, some bitcoin, some savings, some business. because at the end of the day, the result of the investments we made will be the one we will live into.