I notice the FBI's language is that they haven't fond "concrete evidence.... [but] the investigation in ongoing" that Omar Mateen was a homosexual. Concrete evidence for something someone doesn't want to find is a very high bar, but they're leaving the door open (after the story blows over, they'll admit he was a homosexual). There's a huge number of witnesses who claim Mateen was a homosexual. And, very few of these witnesses would have any motive to lie. Other than daddy, who's claiming he's straight?
How do you know most of the people in the club weren't homosexual? And, why does that matter? The club is a symbol of LGBTKFJKLS. Here's an article about the victims. Most of them are obviously homosexual (and probably a good representation of all the people there that night). The first person on the list might not have been a homosexual, but she was there with her homosexual son and his boyfriend.
Why do you want to defy reality and remove the homosexual element from this story?
First of all I live here in Orlando. I get news on this you all do not. Its not defying reality it is remaining in reality. The guys ex wife has disappeared no one can find her. It also seems no one cares to look for her. This is not a homosexual thing, this is not a gun thing, what this is is a terrorist thing. They guy was a terrorist. Period.