"Oh, so because I’m straight I’m not allowed to have an opinion on [insert LGBT issue here]"
I’m an english major. I know next to nothing about science, engineering, and astronomy. Sure, I think space is cool. I’m very supportive of NASA’s efforts. I might even have an opinion on where we should send the next shuttle or how much money we should spend on space travel.
But at the end of the day, my opinion on the matter is not valuable. I’m not going to enter into a discussion about the next shuttle launch with a bunch of trained scientists and expect them to take me seriously.
Sometimes, your opinion is not valuable. Sometimes, you aren’t qualified to enter a discussion.
And, lets be honest, straight people’s opinions are valued in literally every other situation. Hell, straight people get more awards for lgbt “activism” than queer people themselves.
If you really can’t accept that sometimes your voice isn’t the most important in the room, you might need to get over yourself.
There is no training required to be a member of a sexual minority. So, actually, you are just as capable of not knowing what the living hell you are talking about as anyone else is. Being gay (or some other orientation) does not make you an automatic authority on every conceivable aspect of homosexuality nor does it make you an automatic expert on civil rights and what is best for sexual minorities everywhere, in every situation.
Being bisexual didn’t magically transport data about the suicide rates of various sexual minorities into my brain. I learned those things by doing research. Research that not all LGBT have done or will do. Having this information potentially makes my opinion more informed and more useful and more valuable than someone’s who does not have that information. And you know who else is capable of reading books and doing research? Straight people. Sometimes, some straight people are actually better informed and have more nuanced, useful, valid opinions than certain LGBT people.
Being a member of a sexual minority yourself can, but does not always, mean that you might have more exposure to information relating to LGBT issues than a straight person might have. But this is not always the case, and sometimes YOUR opinion is the one that isn’t valuable, useful, or valid.