> I'm an environmental studies major. I don't lecture rich people for taking planes to where they need to be. I also don't make plane trips myself for the express purpose of telling people "You rich assholes need to shrink your god-damned carbon footprint."

Sounds like you're far, far less effective in your environmentalism than Ms. Thunberg. It must be pleasant that you have your personal purity and sense self-righteousness, but none of that that will help blunt the impact of the climate crisis.