There's a circular logic from old-school critics of the Norwegian approach:
A: Look at this great new training method that incorporates X, Y, and Z!
B: Bah, humbug. We've been doing X for centuries.
A: But you weren't doing Y and Z.
B: Y and Z don't matter, so we were effectively doing X, Y, and Z.
That's actually not how logic works. You may think that elements like lactate monitoring don't matter. And you may well be right! But whether or not it works, you weren't doing what Bakken was doing. Heck, I was doing double workouts more than two decades ago, one of which was usually a tempo run (basically from the Dellinger playbook), but that's not the same thing. It's similar, and shares some of the same goals... but so does virtually all training.