I'll acknowledge that's a possibility.
It doesn't seem likely, but it's a possibility.
Granting that possibility for the sake of argument, then Trayvon Martin completely misread Zimmerman. That was one mistake in a series of mistakes that cost Martin his life.
His second mistake was in not going home, but deciding to confront the situation personally.
His third mistake (a bigger one) was to decide not to call the police with the cell phone he had in his hand, but to go initiate a personal confrontation alone against the "creepy-ass cracker."
And his fourth and most fatal mistake was to physically attack someone who clearly had not attacked him first.
And that series of mistakes was fatal.
Not really much different from a 17-year-old kid getting killed in a car. You can't expect to drive 120 miles per hour in a 50 mph zone and not risk losing your life. And you can't expect to attack a stranger and try to kill him and not risk losing your life.
Oh, I'm in total agreement that Martin was in the wrong, and confronted Zimmerman first. And that Martin had ample time to leave before a confrontation. No witnesses, except for the timings of cellphone conversations which indicate that Martin doubled back rather than leave. Even his girlfriend told him to get out of there before the "ass-cracker" could get him. Which bolsters the gay angle.
Lots of confrontations go badly due to mistakes and misconceptions by both parties. In this confrontation, Zimmerman did nothing wrong. Any perceived wrongs are lies made up by third parties. Just by the evidence alone, Martin was the aggressor and lost because of his own actions.