I couldn't disagree with you more. Whether I want to be in the closet or in the open or flaunting my CDing doesn't mean I can't be supportive of LGBT rights. Even if I considered myself severely closeted ( which I do not ) I am not ashamed of who I am or what I want to do.
For Pride month to really be a success and for there to be LGBT rights it doesn't just have to matter to the people who are "proud" as you put it, but everyone. Once we have a situation where even people who are not part of the LGBT community (or even know someone in the LGBT community) care about LGBT rights then we will truly have equality.