I haven’t seen Bill Nye Saves the World but the main problems people have with him is that he’s harsh on climate change deniers and he differentiates sex and gender.
The problems I have with both NDT and Nye are that they should stick to teaching science and quit dumping their opinions about philosophical and cultural matters. It’s like they can assert, because they are science celebrities, other not-scientific random crap they opine.
It’s like when people point out that religious leaders shouldn’t tell you how to vote, and that politicians shouldn’t tell you how to pray. They should stick to science and pull the stick out for other matters that are not their field.