I think Huck is saying that they are both changes made that are not supported in Scripture, made just to make people 'happy.' -- That's where the parallel would be. If the criteria is "to make people happy" then any kind of horrible/immoral change is possible.
To tell you the truth, I don't know why they made their decision to have female priests. I suppose I think of a male priest as more traditional, female priests as more modern. I have a somewhat old fashioned attitude about women. Anyway, I want a church with a male preacher. That will make me happy. I am a male chauvanist.