Idk my LGC9 just recently got a update. Unless Samsung changes recently cause they took use to take forever before they released the latest Android update. Like 6 months afterwards. Also Samsung was know to cut off updates all together after 2 years. Also Samsung TVs are notorious with forced ADs on their TVs.then those suck too.
But with the phone situation LG seemed particularly behind. generations old samsung phones were getting updates and last year LG phones were waiting. I would bet that other TV makers will be more keen to update their older models and more likely to streamline their own internal effort to not have to support multiple software versions..
LG seems like the type of backwards company that will screw customers over to force them to buy the new hardware instead of thinking a good customer experience on that front is beneficial.