I know someone who worked on Nye’s show. Relative to actual scientists, Nye is a nitwit.I think that's Captain Crunch but I understand your point, although Captain Kangaroo and Captain Crunch are fictional characters. While I agree with your claims about him, he doesn't consider himself an actor. He portrays himself as a serious scientist, and others hold him out as such when he agrees with them. Nye in particular portrays himself as an expert on climate change. The kids show was just the beginning, he has moved way beyond that into adult science books, programs and organizations.
But then again it was just a meme, which are meant to poke fun, often to contrast absurdities in our culture. Many times they take a grain of truth and magnify it. They aren't to be taken seriously.
Not where I’d go for scientific backing for public policy. The actual climate scientists have been very clear, and mostly accurate.
Or, if you prefer, you could ask Doctor Science. He knows more than you do.