Luckily, I don't use them.
Let's suppose you have funds on FTX, now that you are unable to withdraw, will you halt gambling for the time being and how will you survive this time?
I don't usually keep a lot of funds on exchanges and that's why even if it will be there, I'm not dependent on them and I can still be good to gamble at any time that I want, wherever I am and whenever I want. It wouldn't be a problem to me but those gamblers that have kept their funds there, for sure they'll be stuck.