> I think this might interfere with some research involving the gorillas. You cannot study their natural behaviors if you are assisting them.

I think this is a very poor argument. First of all, conservation trumps research. Secondly, their environment already isn't "natural" when it has got snare traps in it.

> If, say, a diseased food source begins to decimate the group that could be prevented through cooking, should the researchers attempt to teach them how to cook the food source to kill the bacteria?

Seems far-fetched, but in principle: Yes, why the hell not?