Sharing personal information with any exchange is not advisable. There are exchanges that do not assk fo any KYC Ex:
CoinSwitch, Bitmex etc., buy and trade anonymously.
I dont find any point in share my details.
I agree, depending on the type of information and how much how it you are sharing, also depending on the exchange itself - Is it really trustable?.
Other platforms have done the same to their users in and out of Bitcoin, seems like common practice. However, unless something really fishy is going on i don't agree and wouldn't support those practices at all.
It heavily depends on how many users and the actual why, looking deep inside the issue to be sure. That could take some time.