Again, wrong definition
The word pride does not only mean being proud of your achievements, but also having dignity and self-respect.
E.g the words "black pride" do not mean that people are somewhat proud of having been born black, which would be silly; it means not feeling inferior or ashamed of who they are.
Considering there are certainly people around who are ashamed of being gay, or who have people around them telling them they should be ashamed of being gay, it makes sense to have somebody famous and successful telling them that being gay is fine, and that they are allowed to be proud of who they are.
Biting the hand that feeds IT
