No one has suggested that.
I think including the word "wiki" in any proposed change is bound to rile. Maybe just call it "editable updates section". The original title was misleading since this kind of thing has really been proposed.
After reading through it, it seems to have merit. Having the additions and corrections at the bottom of the page would help indicate which pages should be put up for adoption; i.e. many additions and corrections have not been addressed and incorporated into the text.
I know some of us have pointed out gross inaccuracies to a page in the form of additions and corrections. Even after pointing out the inaccuracies, people will still vote 10/10 because they don't bother to read the additions/corrections when voting. Having them at the bottom could be helpful to voters.