He got the shill thing from his master trapper. That guy is so off his rocker and paranoid he cannot relate to anyone, and grizz is his best pupil soon to be far off his rocker.
In the trapper universe everyone is out to get you so you have to take gram dosages of Iodine to ward of the evil spirits. And anyone that disagrees with your god-ordained preaching is sent from satan to destroy you. Actually it sounds like these people are schizophrenic.
Grizz is yet another example of a guy who started out sort of normal and turned into a lunatic after doing the high doses of iodine.
I love a few drops here and there for a lift, but thanks I'll keep my sanity.
Why are there never any normal people leading the pack?