To the main question, I think the answer is yes, although that's only something I've recently come around to.
To strike a metaphor, is ignoring or not participating in religion a 'religious stance'? It depends on your frame of reference. To someone who is religious, yes. To someone unaware or ignorant of religion, no.
So, why is ignoring or not participating in politics a political stance? Because unlike with religion, we have no choice to live outside of the systems which politics govern. You are affected by the politics of your country and your community even if you are unaware or ignorant of them, therefore the frame of reference is within a political system and a lack of politics is a political stance. Purely IMHO, of course.