I recognize the distinct prickle of "straw men" in some of the anti-midichlorian rhetoric I've slogged past over the years, and can suspect this just springs from people having been "triggered" by broad comedy relief to a hostility devouring everything else in the film. It's just possible some people got to thinking Anakin's high count made his successes in TPM "unearned." There were times I was ready to say "even if you've jumped to the conclusion the midichlorians are said to be the sole source of the Force, and are shouting this contradicts what you heard Obi-Wan and Yoda say before, they still express that understanding later in the story..." In getting to the point of realizing "everything has some midichlorians," though, I think I have got to the subtlety you point out at the close.