I want to mainly use it for privacy over its “security”. I don’t know what makes everyone fine with running it on fucking google pixels. Is there some kind of “low security” version or something for other phones? I’m so tired of certain organizations infiltrating privacy communities and making people believe in improving “security” by voluntarily giving up on privacy and using even non free software like that insecurities blog and other people.
Google’s phones have always supported the full spec. OnePlus used to also do that, but quietly removed support for it. OnePlus 8T on Android 11 (last OxygenOS version) you could, but when they switched it to Oppo’s ColorOS that got removed, that’d be 2021-2022 ish so that fits your experience.
For Samsungs, I don’t know. They let you relock the bootloader with a custom ROM on it, not just after flashing back a stock image? And it does the whole verified boot dance, TPM works and everything?
The key feature here is relocking with your own keys and retain all the security features as if it was a manufacturer’s build. Rollback protection and everything.