Would be really interesting to put a number on "users hate change".
Based on my own experience at a company where we actually researched this stuff, the number I would forward is 30%. Given an existing user base, on average 30% will hate any given change to their user experience, independent of whether the that experience is actually worse or better.
That's probably about right, maybe a little high for hating enough to do something different. I quit using MS Office when the "Ribbon" was introduced, but most people I know just sort of sighed and kept with it.