One of the key points here is that the awards ceremony was a high stress environment with lots of sensory stimulation. This is a triggering environment.
Walking down the street on an average day isn't necessary a high stress environment.
Therefore the chances of a bad attack are much higher in the former than the latter. And this is also crucial to understanding the condition.
My friend has ended up actively avoiding certain situations because she knows it's triggering and that's distressing. On other days she can be perfectly fine. I've been out with her and had no idea she had Tourettes never mind how bad it was. Then she had a high stress situation and fucking hell.
This doesn't mean she should avoid stressful situations. Indeed sometimes they are unavoidable. John was invited to this awards ceremony and had every right to be there - the organisers were fully aware of how it might go. Cos the content of the film he was up for an award for. So no he shouldn't have left the room. Yes the other people at the ceremony should have been fully debriefed. That was the responsibility of the organisers. Not the disabled man. As I say it's not about apologies it's about adequate explanations.
As I also say abad Tourettes attack is very obvious and very distinct. It doesn't look like or sound like someone hurling abuse. It's characterised by a physical response as well as a verbal one. If you know and understand this you are much less likely to be offended even if something is offensive. It might be jarring but it's obviously not the same usage as in an abusive attack.
The difference is important to note. I'm willing to bet that most people complaining haven't actually seen the incident and certainly haven't seen how he was behaving physically at the time. The two black men would have been able to. This adds a visual layer of context that isn't picked up by cameras.
I think the biggest issue here is the failure of the organisers to fully debrief and to give people the knowledge and information in order to ensure that everyone knows what's happening adequately. It shouldn't have come as a shock. And doing this properly possibly would have helped the situation from becoming so stressful and therefore being less likely to transpire in the first place.
It's the lack of adequate planning and support that's the real issue. For all quarters. Not what he says, whether he should be there or whether he should hide from the non-disabled world in case they get upset.