The issue here is that often you are not going to know whether they are of the rude/uncaring group or if they have SNs/disability and either are unaware of their behaviour, unaware of the scope of their behaviour, or unable to adjust the behaviour for whatever reason.
I agree with this. But I just do not go about my day thinking about the possibility someone is doing something because they have a hidden disability.
I am very fortunate not to be disabled, or to have any disabled family. It is therefore not something I encounter on a regular basis. It is also the case that there are more able people than there are disabled people.
So, disability is something I know nothing about, have no contact with, and is not part of my life experience. I realise I am lucky, but also, as I am human, because of my background I do tend to assume the person being annoying is doing it either deliberately or completely thoughtlessly.
And while I do appreciate what you're saying, and that sometimes people cannot help it for various reasons (repeat: I do not disagree with this), I also think that it is more likely to be someone who is rude rather than not - again, based on previous experiences and the fact that there are more able-bodied people than disabled people.
But as I have pointed out numerous, numerous times, I do not speak to, tell-off, intimidate, report, or in any other way inconvenience the person who is doing the annoying thing. I feel annoyed, and this is my prerogative. So, even if it is a person with SN, they will be completely unaware of my feelings.
In fact, my original post merely asked if I should completely avoid the cinema in future - I NEVER suggested people with SN should leave.
In addition, I feel my position and experience (rude people ruin the cinema) is also shared by many others - hence the people in agreement with being annoyed by rude people, and the memes etc. I was sharing a lighthearted post about this.