On the 30th of April 2021, Apple committed to encrypting their OCSP revocation checks and providing an opt-out so that your mac doesn't phone home on every app launch.

Tick tock, motherfuckers.

https://support.apple.com/en-us/HT202491

We're now a new major version beyond and unencrypted OCSP is still (I assume) a thing. (Downloading os12 now, will confirm.)