If it helps I had no idea who this was and didn't know from the name what sex his partner was. In fact, I'll be honest, I read a lot of the article wondering why the reason for the surrogacy wasn't mentioned. The photo was the clue!
So no, not every person who objects does it because of homophobia.
I know loads of gay adoptive parents and lesbians who had a baby with a donor and they're all as boringly OK and pedestrian as any other parent. It's surrogacy I don't like.