May be may not be, Sometimes intentionally imposed KYC can be dangerous but when it comes to the centralized platforms the KYC is imposed to expose the users activity which can be considered as the neutral point because as you sometimes it helps to recover lost or hacked funds and it proves its +ve impact in various ways. On the same point of plane the KYC can dangerous.

Do not provide personal information's for

Airdrops
Contests
IDOs
Lucky Draws
Any unknown and non authentic platform for any service.