XR isn't a 'they' - it's just ordinary people, like me. Plenty of Mumsnetters go, as past threads have shown. We are just people that have had enough of inaction, especially from the government and we want to be heard (whether it makes change or not, it's about trying something).
We are not crusty, hippy, twats, plonkers, arseholes or fuckers. Personally I just really care about the world I'm leaving to my kids. We are on a knife edge, it's now or never to keep fossil fuels in the ground and avoid the worst effects of climate change. The fires in Greece, Turkey, Siberia and the US, and the floods in Belgium and Germany are just the start.