And in all of the examples you gave, there ARE activities etc that are unsuitable for people with those conditions/in those circumstances.
What? The examples I gave were clearly absurd, to demonstrate the extreme absurdity of your stated position and the inevitable logical conclusions you’d have to reach if you find this autistic child’s presence in public so objectionable and are being logically consistent (rather than just being nasty because the issue happens to be autism). And your response is to say that you genuinely believe the absurd examples I gave or what you’d also have to believe in order to be logically consistent are actually - in your opinion - the case too?:
No pregnant woman should ever be more than 20 mins from a hospital? Many live further from a hospital than that.
Nobody with an allergy to wasp stings should go outside at all in summer?
Obese people shouldn’t exercise in case they have a heart attack?
Asthmatics should not be allowed to walk up hills?
Diabetic people should be prohibited by law from eating certain foods?
How utterly ridiculous. Clearly there’s no point in attempting to have a rational discussion with somebody who has your perspective on the world.
Of COURSE children with sensory sensitivities are limited in what they can do. They and their families have to deal with these limitations every day. The OP takes her child to this place because usually it is NOT overwhelming for him, presumably because it is outside so loud noise is not usually so concentrated/ frequent.
Unfortunately, on this one occasion there was a lot of loud and unexpected noise in a short space of time. There is always a risk of that because life is unpredictable and public spaces are shared with others. When this occurred, the parents dealt with this entirely appropriately and moved him out of the way of others in 20 seconds.
What’s your alternative solution, lock him inside the house and tell him he’s never allowed to ride his bike on public footpaths or go out in nature and exercise with his family because - God forbid - he might inconvenience a MAMIL’s bike ride and delay them for 20 seconds on a rare occasion that things go wrong?