Personally... being a newbie here and therefore tending to some extent to initially follow what I see other people doing, when it seems to be applicable... I've jumped on the practice of noting "no postwork" when I've uploaded stuff for two main reasons...

There was no post-work, so thought I should say that, as other people seem to... and also I thought it might help invite any constructive criticism that could be forthcoming... both in terms of what I could do better or might be doing wrong, in my non-postworked rendering...

...and indeed, maybe what might benefit from being post-worked.