We used to have 'chamber' pipes that held a small amount of weed that collected the goo as you smoked the herb that was in the bowl. Tasted like total crap, but we thought is was getting us higher. Of course, the weed we were smoking in the early 70s was nowhere near as potent as the stuff people grow today.
Now...if he made the case that smoking the resin that gets on your hands during the trimming of the harvest, I'd agree that you'd be smoking pure hash.
I said the exact same thing re trying to smoke the gunk before you.
Apparently great minds think alike.