Greta is right, and also smart in that she focuses her activism on the need for urgency without getting bogged down in advocating for a particular solution.

You have very strong expectations that the rest of the world should immediately follow your plans concerning fission. That's not the same thing, and you will get pushback. Getting pushback does not mean we're somehow evil people that don't prioritize this enough, it just means we disagree with you about the costs and best path forward given pragmatic realities.