Thanks for proposing those questions... for (1), wouldn't the exchange announce ahead of time that they are delisting it, and therefore, giving the consumers enough time to transfer to another exchange or back to their wallets?
Yeah, they announce delistings and they give every user that has that coin that's about to get delisted ahead of time so that they can move their funds or sell it asap.
For (2), I'm not worried about that, because CEXes I'll be using are on the safe side of the industry. And as I mentioned, almost all the scummy institutions/exchanges get demolished during the down time; same as in regular market. I am not dwelling on that.
You can't be sure with that. Even the most reputable ones can have some bad days and you'll never know how bad and terrible the situation they can get in.
Just remember FTX, Binance has got hacked with huge funds and recall all of those big names in the industry in the past.