That wasn't the impression I got. He didn't attack Junio just basically said why he didn't agree with the direction things are going with a fair amount of technical detail.

Probably wasn't worth calling out the maintainer by name (or the hyperbole in the title, but clicks!) but at the end he explains that reading a interview with Junio how Git evolves and isn't really designed.

Even has a solution to the Git problems he sees "easy git" (which I had never heard of).