I don't know how many personal stories of struggle it will take to make people stop judging others without knowing shit about their situation, but here's one more:
To the woman who tutted at me using the disabled toilets…
This is in the UK, I believe, where they have separate rooms for disabled individuals to use the toilet rather than a large stall in the same bathroom. The woman had her bowel removed and has to deal with all of the pain and embarrassment that comes with that. And the shame is exacerbated by people being assholes to her and judging her.
It's so so so so so so so important not to judge people based on the preconceived notion that everyone who doesn't have some disability or illness you can see with your eyes is perfectly healthy. This shit is ableist. Do you have any idea how many people have bowel issues? It's a fucking lot. So use that energy you spend on judging people to be grateful your bowel isn't a plastic bag.