I was playing around with LG TV homebrew a while back. Still have the same TV, and in the age of AI, I'm considering putting a coding agent to work on a dump of the filesystem to see what it'd take to run stock Linux on it.

There's an active Discord server (I know, I know...) for LG's jailbreak community and there are some incredibly talented folk on there who know the ins and outs of webOS to a crazy level. I'd recommend checking it out if you're interested in that sort of thing.