I have a 75” Sony x93L and the sound is pretty good. Not very “spatial” like full full system but definitely good for 90% of the TV I watch. I do find it lacking when it comes to watching football however. The announcers are a little “lost” in the crowd noise IMO. To be truthful, it’s that way a bit over my sound system too but not as bad as just the TV. Overall, broadcast TV (live TV) sound has a lot of room for improvement but that’s another thread…
TV audio
Our living room setup is comprised of a 75" Sony with eARC to KEF Wireless 2s augmented with a pair of KC62 subs. But the internal audio of the Sony TV is so good it rivals the external audio. I may reserve the external audio for Roon and Blue rays. I don’t recall TV audio being as good as it is with our new Sonys. The sound is detailed, the imaging precise, the LF robust.