I think KYC should be implemented in every crypto exchange, I feel comfortable and calm using this type of exchange that has strict KYC features, it makes me a little relieved and without worry, Even though there were several exchanges that were hacked and went bankrupt, I think that's a different problem and understanding, but personally KYC has a sense of comfort for me personally.
Example: the type of KYC exchange I am comfortable with.
1. KYC with SMS feature.
2. KYC with Authentication feature.
3. KYC with Email feature.
4. KYC with fingerprint feature.
The four KYC features above make me comfortable using certain exchanges, I am safe for these four things.
The four features that you mentioned don't basically fall under the KYC category. KYC stands for Know Your Customer, and I don't really think that any of these things can make a platform know you at all. KYC is when you are asked to provide personal information and documents that prove that you are the actual owner of the account.
You can always use a number that isn't registered under your name, you can create an email with a fake name and use that for verification. Authentication and fingerprint are only for your security and not a part of KYC process.