Shaming adults for something you would correct a child on

Whatever. My point is that you're imagining the notion of adults being corrected on their behaviour like children are as a hypothetical. I'm saying that for autistic adults, it's not a hypothetical, but a thing that actually happens. And in that particular case, it's also often frustrating and patronising, because that isn't how people generally treat adults. I'm sure that there are plenty of justifications for doing it to people, including adults, children and autistics of all ages, and doing it to everyone wouldn't be as patronising or discriminatory, but it's often very irritating to receive unwanted advice from people. If they hold a similar status and level of experience to you, it can come across as a put down, and if you're different to them in some way, it's often a sign that they're asserting their own position as one of authority, which is only respected if you have good reasons to either believe in it, as one might for someone older than them, or tolerate it, as one might do in front of someone more powerful. So if you were to apply it to everyone, that's something to consider. But it's not something that no adult has experienced. Because some of us aren't considered adults when we are.