Warmaster Horus
Explorer
...
I'll point it out one more time.
The question isn't whether a short rest breaks your concentration.
The question is whether concentrating on a spell prevents you from benefitting from a short rest.
So is Concentration any more serious than having wounds tended to? A short rest allows you to do activities no more strenuous than eat, drink and have wounds tended to. My thought would be that if Concentration is more distracting than having an arrow yanked out of your ribcage, then maybe I'll reconsider the caster classes.