They are end-times weirdo zealots. They do not believe in debate.
The only thing you need to say to them is "WHO TF DO YOU THINK YOU ARE?"
XR are only useful as a prop to point to, to make your case to reasonable people.
There is a direct equivalence.
Find worthwhile people to make your case to.
MPs, local governments, newspapers. Activists are a lost cause.
if you lack confidence or debating skills, idiot greens make good sparring partners. You can learn a lot in a short time about the psychology and rhetoric of zealotry: the circular thinking, appeals to authority & fear mongering.
The debate is between the political establishment and MAINSTREAM British society.
It is not a debate between XR weirdos and counterpart opposite extremists.