Assuming this person is legit (which is a huge assumption given it’s a stranger on Twitter), they appear to have sunk 90% of their worth into AMC: https://twitter.com/23michaeljam/status/1356785696959209472?...
That could be a lot of money to him, but it is not a lot of money compared to what an average worker earns in a year. A probably-young guy losing $6k on a risky stock bet is not life-destroying.
Also, depending on when he bought he could actually be up. And even if he bought at the top, it would still be worth something like 40% of that.