> QUIC REQUIRES CA TLS for all endpoints

No. QUIC require TLS. TLS just provides a way to move certificates, but doesn't care what a "certificate" actually is. JPEG of your 10m swimming certificate from school? Sure, that's fine.

The endpoints get to decide which certificates to accept and in practice in a web browser and many other modern programs that'll be some sort of X.509 certificate more or less following PKIX and on the public Internet usually the Web PKI which is a PKI operated on behalf of the Relying Parties (literally everybody) by the Trust Stores (in practice the OS vendors plus Mozilla for the Free Unix systems) but none of that is defined by QUIC.