I think Paypal and FTX are not related in any way, as they are completely two senate and distinct organizations. It seems like you are having trouble to withdraw your own money and dissatisfied with verification process. I would suggest you to raise an official complainant to paypal and if they are unable to assist you to resolve this issue, then you have the right to seek assistance from a consumer protection agency to help resolve the issue with withdrawing your funds.
You will only find the fault and bugs when you're account is restricted, I have friends whose account was locked after 5 years of using Paypal, and when he cannot get his account unlocked he blame Paypal for being unfair, so it's better to address the issue properly and give them what they asked for, in your case it is your card that you can't remember, why not ask your bank about it, I'm sure they have it in their database, exhaust all means before accusing Paypal.