There's quite a lot of people here (not just in the UK) who will put their own very precise personal principles ahead of anything realistic and practical.
But there are also a lot of very sensible people who are willing to try and make a difference, willing to try and help others, rather than sitting still and waiting for a revolution that will never come.
Honestly, though, there are ideologically annoying people everywhere, and I'd far rather deal with delusional but well-meaning folk here than fascists on other platforms.