The rest of her merits seem reasonable for the position. The post also says she has a masters degree in education and a bachelors degree in English from Harvard. I have to assume that the GNOME Foundation put a lot of thought into this based on interviews and investigation that we're not publicly privy to, and it's not as simple as "GNOME is stupid and they hired a crackpot shaman off the street haha!" People can do great things at their job without adhering to your specific worldview in their personal life.