I'm saying that ability to implement might be more important.
Depends on the degree of mismatch we are talking about, but generally speaking, no, I still think that similar values are MUCH more important than the capability to execute.
Your example, by the way, is not about expertise, it's about the value mismatch (you highly value nuclear power and the Green party highly disvalues it).
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?