How many "major inventors, world leaders, and CEO's" do people really know? Why is it important for US children to know about John Doe, the leader of some random small european country in the 1800's, was gay but not important for them to know about John Boe, a similar leader of a similar random small european country in the 1800's, who was straight?
Furthermore, you then have the whole issuse with attempting to claim certian historical figures as being gay/bi based on flimsy "evidence" and agenda more so than any kind of definitive fact. Not to mention the fact that its generally looked at through the lens of our current society and view points rather than attempting to look into the society at the time. For example, if bisexuality was generally common or expected amongst a certain class of people the act of homosexual sex may've occured without any emotional or true physical attaction. To call that "bisexuality" would mean to call every closeted male that interacts sexually with women to try and keep his cover is also "bisexual", yet I rarely hear the gay community suggest those people should be considered in that fashion.
I guess this is my issue. I'm not opposed to teaching people about ANYONE of importance in history. However, I have issue when we waste time teaching about individuals in history for a political purpose rather than a useful historical one. I don't give a crap if the person who invented the toe-nail clipper was the first bisexual albino asian inventor in the US...on the grand scale of history its not that important and shouldn't potentially be bumping far more significant pieces of American/World history.