Well, to a large extent you are right and much of environmentalism is quasi-religious. However, being charitable, consider the specific goal of maintaining an environment suitable for human habitation. Having a government that knows whether nuclear or coal power is more dangerous is very important here.
I just saw that Donald Trump is running for president. Which led me to the following thought: would any of the big names in tech have a chance at being elected president of the US? Elon Musk? Sergey Brin? Jeff Bezos? Reid Hoffman? Peter Thiel? Edit: Bill Gates?
Some follow up questions/thoughts:
Edit: hypothetically, if one of these big-name tech people were to try to gain political power, how should they go about doing so?