I'm looking into alternatives. So far Kodi is the front runner for my use. I have not decided on whether to replace roku units with raspberri pi running kodi or try the jailbreaking roku route.
Some people have mentioned apple TV, for now that at least isn't riddled with ads. Others have mentioned getting android sticks, but I'm not sure how smooth that process is (or how well they work with remotes).
Technically you can get commercial TVs but many companies stopped selling them. They are literally the new screen tech with no "Smart" capabilities. They are also much cheaper than their smart counterparts.
A Sharp Aquos TV from the late 2000s, pre-Hisense days. We have a 42" model from ~2007. It's only 1080p (which is honestly just fine for its size and our usage), but there's plenty of I/O for modern and legacy equipment, and lots of configuration options. It is an absolute monster at 75 lbs, but an incredibly high quality unit nonetheless, especially considering it's age. I've owned it since 2019 and it's needed zero repairs or anything.
For comparison, we also have a much newer 55" curved Samsung TV (in our basement, wall-mounted up high) which has already needed a backlight driver board replacement. Luckily that was only $50, but still, I expect better.