> Comma placement isn't really part of the language; it's part of the education system.

Interestingly, LLMs disagree with you.

Your statement is only accurate in an extremely narrow case, like if you were there to hear the person speaking, before their speech which was transcribed. Obviously, it is not true for almost all of human writing.

And if you were to go commaless, you will quickly get to rather precarious sentences, such as this one:

"Let's eat grandma."

A comma is the natural fix:

"Let's eat, grandma."