Maybe so, but never the less the most applied technique today, and not only in tv production. You may watch from time to time a new release, not only the classics from the fifties. All of the ten international releases of the the last four weeks apply level reduction when dialog starts, not always, but very often.
But this EXACTLY why I come up with this question. That this mixing technique is spreading so wildly I consider a serious disease. It is a result of week spotting and composition but also a result of week orchestration.
I know from my mixing experience that there is music which flows around the dialog like a satin glove and music which fights against it. Of course it is first a matter of composition but also of orchestration. And I want to tackle the orchestration aspect since it is less obvious than the compositional one.