“Rather, it is that she is a clueless fanatic who is considered brave and enlightened for promoting a cause that almost everyone agrees with without any study or reflection.”

I am sorry but you are so wrong on this. There is a BIG difference between ‘agreeing’ on this issue and ‘acting’ to change it. Almost everyone agrees but behaves just if they did not. That is the point why we need a collective shock that I am not certain Greta Thunberg can eventually trigger. We need more, not less.