I think you bring up some very good points here. Why indeed did RH NOT hear the "hot" top end. That question could also be asked of other reviewers who have not, or cannot, hear the "ringing" of the old Wilson tweet or the "HOT" Beryllium dome in the Magico's and the Focals. One could also ask, what about all the other wrinkles and faults that all gear elicits? IMHO, the a'phile should be very concerned when he/she reads a review that is hyperbole full and then within a short period of time, said reviewer is faulting the old model and waxing again about the new model. A great example being the many hyperbole laden reviews of the old ARC REf 120...so many positives flying around and so much hyperbole, that any one new to the hobby would think that this amp had to be the second coming, LOL
Then we get to read a review of the newer ARC Ref 150 wherein the reviewer states: " the old Ref 120's faults with loss of information, a general haze, and weakness in the bottom octave have all been ameliorated here"....what the heck!!
BTW, I agree with the statement about the Vivid G1's...superb sounding speaker ( the tweeter, even though it is a metal dome is just a pleasure to listen to, no ringing or anything else untoward).