That’s what I do. I have an LG OLED from 6-7 years ago and I have no idea what the UI looks like. But to be fair this is only because I don’t watch traditional TV at all. It’s just an Apple TV for most streaming services and a Mac Mini for some other things like adblocked youtube (with one of those cheap gyro mouse and keyboard bluetooth remotes). I guess I wouldn’t have to use the satellite TV though, I could get iptv via my fibre isp too, but that’d cost money.

The Mac is not good at supporting CEC other than switching source when it wakes up, but even that’s not an issue because I can still use the Apple TV remote to control volume even when something else is the active source. Speaking of volume, my setup also includes a Samsung sound bar which also has a remote that I never actually have to use. Everything mostly just works.