Opinions change every year. When the Bucs won the Super Bowl and most recently, when the Colts did, Cover 2 was great and those zone blitzes were being "phased out." Chicaga ran a great Cover 2 only a few years ago, one that ranked number one and only allowed 12 points per game.
What a ridiculous article. There is a huge difference between fact and opinion. And it's on us to know the difference. This guy is spewing opinion.
No defense, no scheme will work unless you have the personnel to run it. Period. I'm not saying Cover 2 is the best scheme out there but this article is so absurd.
The Cover 2 will work when you have a solid D-Line to pressure the QB, quick LBs who can cover and a top safety to make plays.
Defenses evolve, yes, but if you actually listen to the DCs themselves and not the talking heads, you'd know that these are just base packages and that they run different formations and variations throughout their play calling.
It's way to easy to point and find similarities in teams that are in the playoffs and teams that aren't.