Last time it was Binance, I actually don’t know what caused I but we all got a notification that the old deposit wallet was changed and if would no longer be used to make deposits and now I just go a notification from an exchange [CoinEx] that wallet addresses has been changed and old ones will no longer be of use.

If you’re the type that saves his/her exchange address on a notepad and then just copy from there, make sure you stop and just go to the exchange directly and get your wallet address from there and if you know the address will be used for a long time make sure you used the one from a non-custodial wallet.
When this type of update are made they sent mails to all their registered users to know about this. The people that would be mostly affected are those who aren't that active with mails or doesn't check and read emails.
For instance, there were times where I just copied my address and put on my profile without me going to my exchange to copy whenever I am making payments, but at some point I become very conscious of it since I have been reading lot of post on the forum and I wouldn't want to be a victim of such incident I started visiting exchange that I want to use their address to trade or transact.
However, I can't actually remember when last I visited this exchange as I don't like using it due to my personal reasons instead I love using binance to trade and do whatever I feels like.