Still got my Apple TV G3 but I just don't see the point now we have smart TVs.
The Samsung UI I’ve experienced works like trash.
My Sony TV is an Android TV but it seems I need to use the Apple TV to get accurate color reproduction with the color calibration available. It also lets my two full sized HomePods be a stereo speaker pair. The length of support for OS updates also makes these very viable options that seem to outpace the support length for the built-in OS.
I only use the built-in OS for the guide menu when watching OTA antenna TV.
My TCL Roku TV does not have an Apple TV attached. That’s the only device I feel is worth it both for privacy settings and for ease of use.
(LG WebOS TVs may be fine as well)
There may not be a point for you, but as you can see - the world doesn’t revolve around you as our experience our subjective and each person has a unique use case.