1. The thing that kills me about this article is that they say nothing about wearing a formal shirt, studs, or cufflinks.
2. The big problem with the waist covering being "optional" is that most of these (Gyllenhaal, Clooney) either go for low-rise trousers, or aren't wearing suspenders, so the pants slide down. This article constantly harps on a "clean" look, and it's definitely not clean if you have your jacket buttoned and there's shirt/waistband visible below the buttoning point, Both those guys look sloppy because of it. The trousers should be tailored to look good with the jacket... It doesn't matter what they look like without it. It seems to me like guys are looking for suit trousers that are cut like jeans to avoid the Bill Hader-as-Clint Eastwood highwater look, which destroys the overall look with the jacket on.
3. Looking at the gallery, the best example they have is Gerard Butler (waistcoat, 3 studs showing, short-medium break). It's hilarious to me that they slam Pitt for pants that are too long, and praise Clooney in the next photo when he has the exact same problem. (Pitt's trousers just need a hem, but if Clooney were wearing suspenders, he might be OK.)