Buy meme or fad rubbish and lose it all in a flash, while learning nothing.
Not exactly. Many of the meme stock players actually made quite a lot of money on the GME squeeze. Same for AMC, though it wasn't as profitable. In any case, for a variety of reasons, as utterly stupid as the APES are, quite a few made out like bandits early on. Some DID have the sense to sell all or part of their positions.
Others lost because they held too long. But probably many of them HAVE learned something, and going forward, many of them will take profits when they can. If they don't sell their entire position, they'll be playing with "free money". Needless to say, that money isn' exactly free, but at least they're not losing.