People who desperately need cash aren't speculating huge amounts on crypto. The speculative bubbles are driven by people with extra cash they can gamble on speculative investments.
Crypto has been pushed a way for the little guy to fight back against wall street, but in reality it's a big business for traders with high bankrolls. Someone investing $1000 into crypto and making 10X gains is phenomenally lucky, but $10,000 isn't going to buy them a house. Many of the biggest winners in crypto are the very wealthy individuals who could afford to gamble $10K or even $100K on an ultra speculative investment because losing everything wouldn't appreciably impact their wealth.
It's also important to ask where the money is coming from when someone claims high crypto gains. If someone bought $1000 of DOGE and sold it for $10,000 later, where did the $9000 profit come from? It comes from new entrants buying DOGE. It's often the casual retail investors who are late to the party, cashing out the early buyers with their purchases.