There's a distinction between, on the one hand, saying that same-sex couples who have entered into a registered civil partnership should have equal rights as heterosexual married couples and, on the other hand, insisting that the term marriage should be extended to cover both types of relationships.

In many other countries no problems have arisen in guaranteeing equal rights without extending the definition of marriage. So far as I can see this is the position which akenaton is in favour of. I can't se where any denial of civil rights is involved in this.