You're hilarious.
You think the point is to convince people they're autistic when they describe an activity they do.
But that's not remotely the point. The point is to make people who already know they're autistic laugh at the thing they do so frequently that other people perceive it as weird.
It's an "in" joke among autistic people.
It's not about you, bro. It has nothing to do with you.
You don't understand it, and you're not supposed to.
When socializing, autistic people already have to spend literally 100% of our whole waking lives making everything about you, and you just naturally demand that we do that and you spend literally 0% of your lives trying to figure out what we're about or trying to learn anything about us.
You try to make our communication between each other somehow about you. Well it's not.
We're allowed to have our own "in" jokes, and if you don't understand it, you're free to not bother trying. It won't bother us at all.