Firstly, Kevin is now the publisher here, and is free to write what he sees fit.
Yes, Kevin is the publisher and is free to write what he sees fit - but I don't think that's the issue. The issue is whether he SHOULD be writing about politics on a photography web site. He could also post cupcake recipes, investment schemes, and advice for husbands, but he doesn't. Why? Because they are not appropriate for this site.
I am very involved in politics and am always shooting off letters to the editor, to politicians, to corporations. But, none of this goes on my web sites because they are not related to politics.
Yes, it's a very important topic, but that does not mean it must be discussed everywhere.
FWIW, David Brooks' most recent column provides food for thought regarding this issue.