It's incredibly bloated. I don't want AI engine in my OS. I don't want Spotlight in my OS. I don't want my OS to load CPU for 10 minutes after boot for who knows what. I don't want my OS to ship with Chess app and lots of other irrelevant software. I don't want my OS to ship with Music app and bother me with subscription offers. I don't want my OS to ship with iCloud app.

They also do strange choices regarding shipped software. For example they ship ancient bash 3, apparently because they hate GPLv3 or something like that. I like GPLv3 and this choice makes macos user-hostile.