You're absolutely on target about victims being afraid to come forward for fear of being branded as gay. I have a friend who is straight who was molested by a child psychiatrist as a kid. The main reason he was afraid to come forward was because he thought people would think he was gay. Luckily he has overcome that. There is going to be a trial against this child psychiatrist in - yikes - California next month. There are six other victims that we know of and once the news starts covering it, we expect many more to come forward.
Interestingly enough, this is one aspect of this case I almost never hear mentioned. Yes, I know most pedophiles aren't gay and most gays are not pedophiles, but in this case we ARE talking about a gay pedophile, and that would make it even more difficult for his victims to come forward. Either they might label themselves as gay when they don't want to be seen that way, or they might not want to "out" themselves if they are.
Good luck to your friend, hopefully he will get more justice than was served in this case.