They may not be normal, as you suggest?I saw an article about grown children of gay parents and if iI recall correctly, they are more likely to marry the opposite sex and be more conservative politically.
A while back I went on a fact seeking mission because I wanted to know the truth of it - what actually happens to the children forced to play the role of son or daughter in these unnaturally occurring families.
I have seen articles probably similar to the one you mention, but I wanted the counter viewpoint that I knew was out there somewhere. I felt that the everything-is-perfect nature of the pro-gay articles was likely covering something up.
Counter viewpoint information is indeed hard to find, but it is there if you know the keywords to type in. After finding the sites I was looking for, I have read many, many accounts of adult children raised by homosexuals, all written in their own words, and I have learned that homosexuals raising kids is a form of mental and psychological child abuse. Even most of the adult children who say they loved these parent figures deeply admit that the environment is a bad one for raising kids and they advise against it.