IOTA also had problems in 2017-2018. Was it an error, an exploit or a hack, I don't remember now and I've never followed IOTA very closely, although I was tempted in 2017 to try my luck too with it. And since then, with all the crypto heading south, IOTA is not anymore on investors/speculators' agenda.
Now that money is coming back, maybe some more will risk. Hopefully the team has sorted out everything right this time.