Can't necessarily make it dumb, but you can change how the smart works without buying a whole new TV by getting something like a Roku stick or any other device similar that runs on android that you can then hack/modify to run side loaded apps and such to get around the bullshit built into the TV.
Of course if you're already planning on getting a new TV you could just get one that runs on Android already and do the same thing. Basically if it runs on Android, there are tons of tools to make it not suck all over GitHub.
Even outside of their space, when they "argue" it had generally been posting giant, random images that had little to no context followed by walls of emojis. Which is why my blocklist is mostly Hexbear users.