I think sometimes a response might seem harsh, when it's just imperitive to the poster that something be corrected Right Away for the animal's safety.
A post of "I dunno why my snake isn't eating when I got the heat at 105F!!!!" get a immediately reply of "TURN THE HEAT OFF NOW!!!" which might seem harsh. It's really only severe concern. That was just an obvious example, but I've seen some replys that might be seen sort of like that.
It might also get harsh when a poster argues that it can't be his bad husbandry, it must just be the animal being stubborn, or some other excuse.
Mostly I think the responses are pretty good, considering the rest of the internet sites. There is always room for improvement, but this is a great and mostly polite site, IMHO.