Let me guess, to reduce murder rates we should also have less children! After all, they might turn out to be murderers.
Any person remotely willing to not have children in order to protect the climate was not a big problem for the climate anyway.
Any person who doesn't care slightest about the climate, and would never look at the debate we're having, is a much bigger problem.
When exactly has XR splashed paint across art works? Across meaningless glass in front of art works - yes. But when was it art works? (Also: was that XR? I can't remember exactly, but I very much doubt it.)
Who on Earth glued themselves to trains? That's even more absurd of you to say.