I think it would depend on what they want to say with the "Where are they now?" stories.My protest against classic Trek is not format but the "Where are they now?" style stories suggestions of visiting the Klingons, the Romulans, the Trill, the Dominion, etc.
If it's just to have the Klingons show up and be the same old Klingons to drop mentions of Martok and Worf, I agree with you.
If it's a story involving the Klingons where they do something like use some fundamental change in Klingon society as an aspect of a story to explore more about how Klingon honor conflicts with some sort of progress, I'm not opposed to that if they can make it interesting.
There was a pitch during the period between the end of Enterprise and Star Trek (2009) by Bryan Singer that envisioned a version of Star Trek set in the 31st century, where part of it was exploring the changes to the galaxy. If I remember right, part of the pitch would be the Klingons shifting from "Viking Bikers" to more Zen Buddhist warriors that had redefined what honor meant.