The article isn't that well written so there's some wiggle room in either direction, but by my reading while he does say the same thing directly, he attributes that view to the author of the book and then attempts to refute it, while mostly failing (IMO).
Snyder, who died in 2009, would almost certainly dispute
this characterization. In Save the Cat!, he stresses that
his beat sheet is a structure, not a formula, one based in
time-tested screen-story principles. It’s a way of making
a product that’s likely to work—not a fill-in-the-blanks
method of screenwriting.
Maybe that’s what Snyder intended. But that’s not how it
turned out.
The way I read it, I'm agreeing with what the author of the article thinks the now-dead author of the book would have said, but the author of the article himself claims to have a view at odds with this view (but then goes on to fail in proving his view, IMO).