First of all, thanks for writing the articles you do. Just because I might disagree with your views doesn't mean I think you have your head up your ass. Well, not all the time anyway. ;>P
People I talk to barely remember him as a qb which is why I call him unremarkable. I don't know anyone who "hates" Rees. He has always been the guy who came in after Golson. To my memory, Book gets far more derision than Rees ever did. I know plenty of people who now hope Book goes pro while during the season openly pined for him to "get a concussion." Having a funny nickname (which is more a play on his name than anything else) does not make one "remarkable." So I guess we'll just disagree on that one. For me. any current "dislike" of Rees is more directly tied to Kelly, not Rees the qb, who feel he looking for coaches that won't push him, that he picks low hanging fruit etc., as opposed to finding highly qualified coaches befitting a team that says it targets the NC as it's goal.
As to his play calling during the game, I think you are quibbling/reaching over the method of delivering plays when Rees was qb versus how it is done now. I acknowledge that Rees probably had more freedom in his final year due to his experience but I suspect we'll see next year with Book for the same reason. And we'll also disagree that Book making an RPO decision is not play calling in the same sense that Rees might be reading a blitz. They are both making play decisions based on what they see based on the options they have.
I did get where you are going re: Rees' experience as a qb but I think you overreached, an occupational hazard for any author. For me, Rees' total experience to date merely makes him a good choice as a qb coach. I see a highly inexperienced coach, with potential perhaps, who ought to get more exposure to offense at different places under different coaches, not a guy who ought to be getting a try-out as an OC on a Power 5 team that aspires to be a playoff candidate every year.