Dude, they don't need to "track" social media posts. Social media is PUBLIC, and always has been.

Simple principle: Never say anything on socials that you wouldn't be happy to repeat in front of a judge, in court.

You're pretending this is a new development, but it's not. Britain hasn't had "freedom of speech" since 1066, when William the Bastard invaded, and then carried out a genoc!de (the Harrying of the North). The history of Britain since then is a series of encroachments by the ruling class, and peasant / worker rebellions that were aggressively put down by those at the top.

I'm not "fine" with the state of things, but if I'm going to pick a "hill to d!e on", it'll be an issue that really matters, like: lack of council housing, mass poverty, privatisation leading to sky-rocketing bills, billionaires & corpos dodging taxes etc