Yes, all of this seems par for the course, even if you consider it a bit harsh. The bottom line being that there doesn't really seem to be any bug with your fan survey.
Also, do have in mind that the survey results themselves are slightly randomized, so they might be a bit above or a bit below the real feelings of your fans.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."