I think you have to take the question into context. I don't wish to talk about MagiK, but that's his personality from what I can see, straight forward with no BS. Looking at it from that perspective, it was a simple question asked because it is a subject that he feels strongly about. I saw no offense intended by that post.
As for the original question, can a person on ironworks support a cause without vocalising that support here, well sure they don't necessarily have to support it here, but if you support something and that topic comes up, why wouldn't you have a say in it?
I took many a beat down in the war forum, and harbour no ill feelings against those who were weilding the bats.
Some subjects invoke strong emotions with some so you have to expect strong reactions.