The writing has been on the wall for years.
They never learn until they become the victim. I'm an admin a Bitcoin related group from 2018 if I can remember correctly and I was trying to teach the group member that "Not your keys, not your coins" but only a very few of them took it seriously. After the FTX issue, a lot of people started to believe what I have been saying for years lol.
This is bad advice. The only way that withdrawals lead to bankruptcy is if they are fractional reserve. If they store every deposit in a secure cold wallet like they should, then they will have more than enough coins to process each and every withdraw. Everyone should withdraw all their coins now (or ideally, years ago).
Most of the exchanges are doing this including Binance. There have been some news that Binance was using users fund, can't find the news now.