Just a quick heads up, the video of the disabled guy getting wheeled away was from AGDQ 2017 earlier this year, not the current marathon going on now. On his tablet he has a photo of "FrankerZ", an emote from Twitch chat. Before anyone asks, no, FrankerZ is not associated with anything racist or sexist or whatever. It's usage is similar to Kappa, for things silly and sarcastic. I guess they kicked him out on principle, but they sure as shit picked a hell of a bad target to make an example out of.
Also neat of them to say "you can bring signs as long as they don't block anything", which is pretty much what'll happen the minute you wave it around. I've seen a couple of people hold up signs live, one of them was "Happy Anniversary", the other was "Hi Dad". Not sure if the people who appeared on camera were kicked out or had their badge hole-punched though. They walked right up to the audience camera to hold them up, which is probably a no-no.
(I'm not at SGDQ by the way, just a fan of speedrunning and watching in my free time.)