It reads like an appeal to authority. "This house has too many windows" is clearly an opinion. "This mass of this house has too many voids" sounds weighty and important, like a technical critique, a proven rule, a fact.
But architectural aesthetics aren't a quantitative field of study, so it's obvious from the get-go that we're not dealing with the same kinds of facts as in the natural sciences. From there, it's fairly obvious that these terms describe principles, not authoritative laws of nature.
It's quite strange to get hung up on this issue. Yes, those principles are subject to interpretation/taste/subjectivit/etc, but that's hardly the point.
I mean no disrespect to anyone in this comment thread, but this line of criticism is pedantic.
He leads off by essentially saying "If you don't share my tastes, don't worry, you're not stupid, just uneducated." It all comes off as quite certain that his taste in architecture is objectively, factually correct, not merely a matter of opinion. That's why people are getting rubbed the wrong way over it.