A good CS program usually requires a good STEM course load. You have to take classes like Physics, Chemistry, Numerical Analysis, etc.. So a CS educated developer should have some understanding of science, but of course in day to day life he probably won't be doing any real science. But then neither does the star of a child's TV program.
The fact that he's willing to grade the whole country based on what they believe about a topic that most of the country can't possibly have researched in detail and that they read conflicting accounts about on the news and other media about indicates that Mr. Nye isn't really all that good at logic and philosophy himself.
Whether or not I, as a non-climatologist who hasn't devoted weeks of study to the question, believe all the hype about global-warming has little to do with what I know about science and a lot to do with who I trust to tell me the truth. Do I trust they guys at MIT and Harvard because I think they're all good guys who have no ambition beyond seeking and publishing the truth, or do suspect that they are like other humans and have weaknesses that may cause them to do things like preferring to interpret data in a way that will get them more funding and saying they agree with things in order to fit in with the crowd? Do I trust Al Gore? Do I trust Republicans? Do I trust Democrats? Do I trust the UN?
Personally I don't trust any of them. That and the fact that I haven't done the research myself and don't have enough time to evaluate the competing claims are why I don't take a strong position on global warning. In Bill Nye's eyes apparently that means I don't know anything about science.