Nothing to research. They're all the same bad or will get bad in the foreseeable future. Only thing that matters is the screen technology and the specs of your external media center.
That's what i say; use the TV as dumb display or deal with enshitification now or later.
Btw, i have an LG too but i always understood them letting you disable stuff them just anticipating GDPR lawsuits. But seems it's the same in US? Maybe they really want you not having a bad experience.
I mostly like my LG tv, and it's nice that I can use it without agreeing to their T&C or logging in. It does really piss me off that if I wanted to change picture settings (brightness, color, etc) I'd have to turn their adware settings back on.
I say this as someone with two LG TVs. Sure you can just not connect them to the internet, but a lot of people rely on the "Smart" part of the TV to view all their content.