Thanks for the answer Thomas/Northward.
I'm not going to continue discussing the topic in length here. But I do want to briefly comment that you mainly pointing out weaknesses as how LEDE started out before one had measurement equipment rather then what it developed into. From what you are writing it seems like you haven't understood LEDE/RFZ.
I don't see anything of researches that says "we no know better and have moved on". I'm only hearing this from people who doesn't understand the LEDE concept or are selling something else.
When one doesn't the need of an ISD gap, one also doesn't pay attention to to hear the recording room alone and are including the sound of the control room in the mix. That's really sad to hear. I believe the music itself and the place where it's recorded should be the main attributes.