In a regulated exchange, it is normal for the platform to ask for KYC from prospective clients. Of course, they are under government regulation, which is why they can legally operate. It is also up to us whether we want to submit or not.
The exchange does not force us to do this, as long as if we want to use their platform, we must also follow the rules it has, and it may also be one of the security measures for our account using their platform. But if it's a decentralized platform exchange, we don't need to submit KYC. just as simple as that anyway.
At the end of the day it is always our choice if we want the convenience with KYC or the cons of using decentralized exchange.