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.
Something that results and profits great then the risk is also great. But it's like that if you want to become a millionaire, you have to take risks and achieve everything you want. I even begged not to invest in bitcoin 2009 which is still at a price below $1.