The "she is unlikable" argument is just working backwards. It is a mechanism to criticize climate activism without having to talk about the ways in which climate change is a crime against our children. There is no possible behavior that she could take that would not produce this "she is unlikable" response except to never speak in public whatsoever.

A bit less of the superlatives would help.

> ... talk about the ways in which climate change is a crime against our children.

For example, how is this phrase supposed to work, rhetorically. Shaming people into joining your cause?