First of all the style and animation was executed beautifully, especially for your first time in this style. I can tell that this must've taken forever.
Obviously the message you're conveying overrides everything, and that's what people are going to react to based on their opinions. With that being said, I can definitely get behind the gay rights side of things. I think you demonstrated that very well.
However, I agree with some other posts. By making the penis the source of all evil (only the villains have one), it also comes off as this super man-hating feminist fest. I believe in feminist ideals, in that both parties should be equals, but I can't agree with that kind of extremity. But to be fair, art doesn't become bad just because people don't agree with it. So good job if that's what you believe.
In addition I think some parts could've been more subtle, namely the bible and maybe the republican. Overall good job, I enjoyed it. And you should take the fact that it's stirred up some controversy as a compliment. Better than the "meh" reaction most art gets.