We strive that the questions and answers on the site will be as full and complete as possible, that is very understandable.
We also want them to be as readable as humanly possible, whether it means linebreaks needs to added or removed, further formatting, capital letters changed, grammar fixed and $\LaTeX$ added/corrected.
However, nitpicking all the smallest changes is a tedious and long process, which one cannot possibly expect an answer over 15 lines long to have upon first appearing. Therefore we accept the occasional bump when correcting, adding, fixing and so on.
At some point, however, it becomes that the answer was fully given, well understood and perhaps accepted. Users may still continue editing, further improving and correcting.
Should we, as a community, support the continuing edits going further and further into the tiny details, or should there be a point where we say "This is fine, very readable, and the main page should be left for newer and more active issues than this question." - and if there is such point, what is it?
Edit: Before downvoting, I am not objecting such edits. In fact more than once I did such things myself and I have no qualms about people who do. I do think that this is something worth addressing at least once in the lifetime of a community like math.SE.