My parents are getting a new tv, and are asking for recommendation. I think all I can influence is the brand/model (not realistic to propose rpi and more complex systems). I instinctively avoid google/android and lean towards anything else open source, so probably LG WebOS… But I had bad luck searching for more detailed comparisons. Maybe you have experience or opinions?
Everything is really bad. But sadly it is nearly impossible to buy a normal TV these days. Just buy any SmartTV, and get yourself a MiniPC with the Linux Distro of your liking.