What was valuable in Nimzowitsch has long ago been absorbed into the chess mainstream. And what has proven less useful has been discarded. In fact, in most grandmaster games today we see the Italian game, Ruy Lopez, Queens Gambit declined and Slavs where all the play is based on classical principles. The Hypermoderns enriched and broadened our understanding of chess, but the built on the foundation created by Steinitz, Tarrasch, et al. Of course Steinitz, Tarrasch and Lasker all played the French defense with great skill
Nimzowitsch was absorbed into the mainstream of the Soviet School, but far less so elsewhere. Petrosian played entirely based upon Nimzowitsch's principles, for example, Fischer not so much. It's been a while since we've had a Russian or ex-Soviet World Champion, and the hypermodern influence at the highest levels has waned during the whole of that span.
The reliance on engine analysis has pushed the chess world even further away from the hypermodern school. The classical rules are more easily quantified, and so many play to an engine's analysis number without understanding how that number is arrived at.
The hypermodern was never fully absorbed into the mainstream of chess, except perhaps for Alekhine and Petrosian. There are fundamental conflicts between the classical and the hypermodern which were never really resolved over the board, and remain unknown to this day.
There's nothing wrong with the Scandinavian. I don't play it... I play the Najdorf. But I've outgrown most of my prejudices over opening systems.