I gave up on macos when they started making the OS partition read-only. A good security feature in general, but their implementation meant that changing anything became a big set of difficulties and trade-offs.
That, combined with the icloud and telemetry BS, I'd had enough.
Not only good security, but it also makes software updates a lot faster because you don't have to check if the user has randomly changed any system files before patching them.
That, combined with the icloud and telemetry BS, I'd had enough.