When it comes to Samsung, look at their "Pro" TVs, which are intended for businesses to use for digital signage. I've never had to deal with any of the very few smart features it has popping up or annoying me in any way.
I'm no expert on picture quality but it looks damned good to me, and it's supposedly built to run 24/7 and not burn out since as said it's intended for digital signage.
https://www.amazon.com/dp/B0C9G54G2X
https://www.samsung.com/us/business/displays/pro-tv/explore/
I mean you could (though it's not recommended, because fuck reddit) just type "https://new.reddit.com/(whatever)" in order to load new reddit for just that one tab. But don't do that and don't participate in r/place, because fuck reddit.