Well, despite hating their cause and hating what they've done, I can not say it is any worse than some of the things we did as hunt-sabs and anti-vivsectionists in order to make a point.
I suppose they're trying to illustrate how hunting
is part of our heritage. It's a fair assumption that
the people who originally made the Uffington White
Horse would have hunted, probably with dogs and horses (red coats and jodpurs? Maybe not).
That's not to say that I agree with what the RCA stand for, or what they've done. Just an observation.