Why aren't you being more vocal about the potential for nuclear war? Seems like a very real threat to you, as much as global warming seems to be, but I've seen and heard almost nothing from you.
Which leads one to believe that many of these activists are not actually motivated to protect humanity from an environmental disaster, but because they want to improve their social standing.
We're left to assume the worst, that you are not actually motivated to protect humanity from an environmental disaster, you just want to improve your social standing by posting here on HN.