A kyced team can give a certain level of trust even though it is not a guarantee to success which is not the sole aim of doing the kyc in the first place, it shows the team are ready and willing to do their best to gain investors trust and be at ease, if investors can be subjected to kyc, I don't see why teams shouldn't.
But I very often find the opposite, when the team hides their identities, and investors are required to pass verification. In such cases, you just need to skip such projects and direct your investments to where the team is more open. And if the team has been verified by a specialized service, this will increase the confidence in the project among investors.