The whole "this can't end well" seems to come at every Robin Hood product announcement.
The somewhat recent addition of crypto is just depressing. They've integrated it with chat and live announcements of transactions, so you see people's names as they buy $1500 or $2500 worth of crypto as the whole market makes an inverted hockey stick nosedive to zero.
But the most absurd thing was seeing the HN comments yesterday as people were saying they were living up to their name of taking from the rich and giving to the poor. They're doing something worse--tricking non-rich people into thinking they'll get rich, while making a ton of money in the process.