Well, you can get some "interesting" diseases from bat guano, and by doing this for the camera & pretending to be tough about it, he set a very poor example that others might imitate- & they might not have the medical insurance that I assume he does.
With cameras rolling everywhere these days, it's always important to consider the impact our actions have on the impression others get. It comes down to comparing the benefit (to education) versus harm (to wildlife), but at least the local guy didn't allow him to continue as he had been. Drone footage of the pythons would be just fine, IMO- but this is typical of the "wildlife reality shows" (& what I object to)- they push the human involvement for the "wow factor".