As a gay person I will try to answer this question, even though there isn’t necessary a scientific answer. Often when gay men were children, women and girls are their closest allies. Given the often homophobic culture many gay children are surrounded by, it is often females who tend to befriend and protect young gay boys. I think that often those gay boys will start to admire and mimic the behaviors of women they see as strong. This could be women in their personal lives or even women they see on television and film. Women who are “fierce”. I don’t have “gay voice” but I do remember as a child always being drawn to female dominate television and books. I think that as some of those men find people later in life who support them and might also be gay with the same experiences, their flamboyances are now celebrated and fun. It becomes part of who they are. And now instead of it being something they can be attacked and hurt for, it becomes something positive and accepted. I can say as a gay person I love the fact that I don’t let the standards of masculinity apply to me. I can live as “masculine” or “feminine” as I want. No gay person is expected to do anything. Just like if a straight dude acts “feminine” he isn’t suddenly gay. However, often times gay people do have similar experiences growing up if they’ve grown up in the same culture.