Cuprajake ‘need’ - probably not.
Is there a market for a flat burr grinder the price of the niche? I certainly think so. Current options don’t have the same reputation.
The burr size is small for flats isn’t it? Given there seems to be so much talk about bigger being better, is it worth it for you can’t use larger burrs?
I guess depending on price people can experiment without buying a whole new grinder.