Yes well, it is quite possible that their concern isn't any of these issues but positioning themselves in the elections. What politicians wanting to win? How shocking. Now how or why anyone decided cultural issues were the issues to run on I'm not sure. I mean you've got to do some kind of brand differentation, but that as a marketing move ... hmm ... don't know about that marketing there.
Maybe we should be glad, it could be worse, they could be running on being more militaristic than Obama etc. (they are to some degree but ...). It could of course be much better, but I suppose that is too much to expect.