I would worry more about someone with a perfect diet who never deviated from it than someone who has bouts of overeating when stressed.
I read an interesting article by a psychiatrist recently who did not believe in addiction as a mental illness but more as a dysfunctional way of coping with the difficulties in the addict's lives. Over eaters often admit that their overeating is closely related to how they feel, when life is good they eat sensibly, when life is difficult they eat to fill the void in their lives.
I find that I tend to feel permanently hungry when I am tired, or overstretched and running fast in order to go slowly backwards or, as last week, when there was a big change in the weather when the pretence that was summer this year suddenly changed gear and went full throttle for autumn with a sudden drop in temperature.
I try to deal with it by facing up to the problem and simply planning to eat more at meal times: bigger portions, extra items etc in order to stop mindless nibbling. It usually works. At the end of a short period like that I may have put on a couple of pounds but I try and lose them as soon as possible. Sometimes small weight gains just disappear over a few weeks