The only thing that really matters is if Kemper users feel these new profiles allow them to get their preferred sounds without switching to a different profile.
Totally agreed.
To me, accuracy is the entire point of these products, and the capture technology specifically
Accuracy schmaccuracy.
No, seriously, I absolutely get your point and in case it's important for you, I would never even remotely try to tell you that you could be wrong.
Just that it's not relevant for me.
For me, any amp I ever used, regardless whether it was a real amp, cheap, expensive, tube, digital, whatever (and that obviously includes modelers), has always been a mere starting point as I'd usually use further devices and tweakings to get to whatever my achieved sound was anyway. And I never had accurately "authentic" sounds in my mind. IOW, whenever I thought "Marshall" it didn't have to be a certain model but rather something to take me close enough to the ballpark.
Sidenote: I actually like it that way because without looking for any authentic sounds, my entire gear purchasing history certainly became much more manageable financially.
Anyhow, along those lines, for me the modeler/profiler wins which is offering a nice amount of decent starting points and enough tweakbility to probably take me elsewhere - with as great of a workflow as there is. And once you have a well sorted amount of profiles on a Kemper (which defenitely is a sort of big thing to get to...), it checked those boxes pretty well in the past already, at least IMO. On-unit editing (quite relevant for me) is absolutely excellent in my book (in some aspects even better than on the Helix) and the new liquid profiling only seems to enhance that.
No, I never owned a Kemper (I always thought it was for good reasons, but I'm not too sure anymore...) but I had one borrowed some times and was playing them on various occasions, too - and it's always been a very pleasant experience. In fact, much more than my "stock" Helix experience.
As said, it might only be me and I absolutely understand anyone asking for accurate profiling. Just don't need it at all personally.