I like this approach. "funny meme" aside, I think it is a good way of showing how much a certain language can affect how other people think and feel about a subject. Just read it THAT way and "being neurotypical" suddenly sounds like a disorder that isn't fully compatible with the public, doesn't it?
We live in a world that isn't exactly kind to people on the spectrum. It is loud, flashy, hectic, overwhelming, unrewarding but you're still expected to work like a cog in a machine, despite having fewer and fewer places where you'd actually "fit in" without grinding gears, and whenever there is some sort of public talk about that topic, it always, always sounds like the affected person is the problem and personally responsible for fixing themselves, when a no small part of "not fitting in" is due to society itself. Maybe a change in language is due to remove that stigma.
If you think about it as a dialect the only way to learn it is like any other language that doesnt have a textbook: exposure with the native speakers.
I think the point OP was trying to make is that most likely people who know this dialect (i. E. Are used to working with your bess) have an idea of how he wants things.
In this case, the dialect would have a very small subset of speakers (only the people used to working with your boss).
I can see the logic in this argument, but I don't think such a small subset of speakers qualifies as a dialect and I think your boss is just being difficult. Also I'm pretty sure this would have been an issue for many neurotypicals too, since the info wasnt communicated properly.
I think this is more an example of power play - your boss is in power and how dare you not know? It's the same treatment we get from NTs everywhere. They are "in power" in the sense that they can expect most people to pick up on their code and don't have to change. Your boss on the other hand just doesn't care if you had a chance to understand and that's why I think he's just power trippy.