I also agree with the original post, tho' I feel some other posters here have missed some of the point he was making. My understanding of what he was saying is that there is now an expectation that folk musicians are under some sort of obligation to declare their political views publicly, whether they wish to or not.
There is a sort of implication that if you don't do this, you must be incredibly shallow, unfeeling, naive, etc, and I do not agree with this view at all.
In Scotland at present ( I'm being a bit tongue in cheek here!) this would of course include being well to the left of centre ( aren 't all folkies?) and definitely pro-independence. And it doesn't just extend to singing about it or pontificating about it on stage, it gets you writing long letters or " pieces" for national( regional?) newspapers. We even have the situation on the other forum that the OP referred to of people declaring other folks' politics for them!