I actually watched this before making my own post on it (#937463). It actually inspired me to do my own deep dive, because some of his critiques were silly, like the asterisks, or the sign of \epsilon. No one cares about that dude, and I think most professionals would find it a bit bush league to criticize the format in which people write their equations. But I do find it amusing that I probably know how to put math on a website better than the entire USTR.

But his mathematical analysis is basically right.