Biggest "issue" is that in a 2-3 years the whole new generation of people will enter crypto and for them all that has happened with FTX and other platforms will be a distant memory. And since people often don't learn from their own mistakes let alone others, they are bound to do them.
Not only in 2-3 years, they keep arriving constantly, but they will still be the most in the next big bull run when Bitcoin will again become a hot topic everywhere. Those who want short-term profit will not buy hardware wallets anyway, because for them some CEX will be a good choice to keep their coins for a few months - of course, if they don't have the misfortune of having that company fail at that moment.