The Shure M97xE has been measured and tested over and over, with the same results. It has a horrible falling treble response. It starts dropping at 2 kHz, falls like a rock above 10 kHz....
Yeah, on a graph, it may look like it drops a lot starting from about 2k to 10k but in realty, the drop only equals about 2db-3db...... hardly noticeable..... or hyperboliclly "horrible".
One must pay attention to what each line on the graphs represents to interpret it properly.
Yes, it drops a bit faster at about 10k but, it has been proven "over and over" that there is not much musical content over that (if there is even any) in most LPs. anyway
Also, it's a fact that slibants are in the 2k - 4k range.
So, no "drop offs' have anything to do with it.