It includes transgender women, but I don't think doing so skews the numbers. AFAIK in the US there are about the same number of trans women as trans men, so any increase in the queer percentage from trans women would be balanced out by the decrease from excluding trans men.
I'd expect an AFAB-specific poll to have a slightly higher queer percentage, since it would include nonbinary people while this poll excludes them.
The second wave of arrests was almost entirely students, because Columbia has been on lockdown and it’s been increasingly difficult for non-students to get in in the first place. The “outside agitators were at fault” narrative that Columbia is pushing is at odds with this.