True, but a) Mozilla had benefits equality all along anyway, and b) California moved to equalize benefits way before prop 8 was overturned, see my link above or look it up - for almost all matters except calling it "marriage", domestic partnerships in California have the same meaning as "marriage" for about a decade now. The whole hoopla seems to be exclusively about calling it "marriage", not about any benefits or any economic or legal matters.

A two class system leaves room to give one class new and exclusive benefits.

The only issue I had with domestic partnerships was the lack of federal recognition, and the lack of universal recognition by other states.