Good point. While conceptually trivial, it could easily fall apart in the case of deleted sections, merged sections or rearranged sections. Particularly if people comment on sections in the natural manner of:
Section A blah blah blah
Comment: Not enough blahs
Section B Lorem ipsum
Comment: Too much Latin
Section C Lorem ipsum blah blah blah
Comment: See my comments above
And then the author fixes up some stuff and moves Section C to the top and now that comment makes no sense without checking through the Edit History.
So yeah, probably best to leave that piece out of V1.0.