The parent comment is not suggesting that Yon is about physics/metaphysics.

Understanding is important for readers. Demonstrating understanding is important for writers of both technical documentation and internet comments, and of critical importance in the era of AI.

What if it's pure nonsense, therefore impossible for anyone to understand. Does that mean all criticism is "slop" and nobody's allowed to comment on it?

"If you don’t understand the terms, don’t pretend you do"

The comment you're replying to explicitly says "This language looks interesting, but I don’t understand the concepts." so I'm not sure what you're trying to say. Their note about physics/metaphysics was about "someone [they] knew", not TFA.