To me, his actions read that he has done this before. The way it way types, the way it was worded, all seem like something he has done in the past. He seemed comfortable in his trash talking and again, it reads as if it's something he's done before and hasn't had any repercussions for. The only difference now, is that it's a girl. There was no thought put into what he typed because, this type of trash talk had not gotten him into trouble before. He figured it was fine, in the sense that he has said stiff like this to is opponents before. For them to disqualify him for it because it was towards a girl just shows the double standard that is going on now.
While I don't agree with any sort of trash talk happening in games and on a professional level, towards anyone, if this was truly an issue before and they were doing disqualifications to show that they will not tolerate such trash talk, he would have already known this and not tried to trash talk anything towards his opponent. This seems like something the company and the tournament runners are doing just to cover their ass and not have the girl try to pull a whole, this is sexist thing. Granted, the girl doesn't really seem like that type of girl but, with the way some of these...what can I call them even...women are going about all this crap, I'm not surprised they are assuming the worst of her and are afraid of it happening. They should have started disqualifying people from the beginning of the whole game tournaments thing at the beginning, and not only started now because it happened towards a woman.
As for the tournament thing being sexist and targeted and advertised to only men, It's not stopping women form joining. Just because your target audience is targeted towards a male demographic, doesn't mean that women are forbidden to join. I mean, as much as I hate to use this as an example (I will more than likely be bum rushed for it all lol)take my little pony as an example. Their target audience is for little girls that are between the ages of 5 and possibly 11. Their ads and merchandise are all targeted towards them, they have little girls playing with the toys in the commercials, they have nightgowns and everything targeted towards them. Though this doesn't stop little boys and even grown men from participating in watching the show or even collecting and playing with the toys. If having the whole games tournament industry be called sexist just because it has a preferred target audience, then, by the same logic, my little pony is sexist as well.