When the Kemper first came out and started getting rave reviews, Cliff would purposely go out of his way to make some disparaging remark about how much the Kemper sucks. It was the first time that Fractal had any real type of competition in the digital modeling world and the boss handled it poorly. He has since backed off a little but I think his actions left a pretty sour taste in the mouths of many.
The funny thing is, Fractal users should be applauding the Kemper. Without it there would be no Tone Matching and various other tweaks over the 16+ firmware revisions in the Axe Fx II.