A big part of the differences between profiles come from the used CABs, mics, mic placement, cables, room, mic pre, ...
By selling a merged profile - lets asume the amp / cab,mic seperation is perfect - could everybody create a simple DI profile(with a di box) and then combine with the rest from a professional setup.
Yeah I get that concern...but that was always kind of possible with the Kemper anyway. Not as exact, but still good enough for a lot of people.
And in general, cause I still read it:
I can't stress it enough, merged has the same sound quality as studio profiles. They sound the same. If your studio and merged profiles don't sound the same, then something went wrong during profiling. Bad quality DI box, bad gain staging etc. It has only upsides to use merged profiles, no downsides, period.