"Most" isn't probably true, but the number was quite significant, indirectly confirmed by Microsoft by backing down from some design decisions in version 8.1 (bringing the Start button back) and 10 (restoring the more traditional-looking Start menu). Userbase pressure was an obvious factor in these choices / concessions. I can't recollect anything similar in the history of Windows UX.
I consider myself experienced and unbiased, but the visual inconsistencies (animation glitches, awkward scales and proportions) drove me away from trying Win8 longer. I'd be very curious to have more details about your experience with it considering your above message.