The point is that he didn't think it was racist language just like some people want homophobia to be strictly defined as violence against or fear of. It's more subtle than that just like racism can be.
The JW cartoon provides the context that perpetuates stigma against same sex couples. Yes it's consistent with their past and their interpretation of the Bible but that doesn't make it any less depressing for anyone struggling to come to terms with their sexuality.
But Simon while I'm sure you will continue to see this as another overreaction, I wish you all the best.