I agree I think it is tolerance, but I think it is part because people are getting shitty bud, so they are not getting the full effects of it all. If people had a varity of goodness maybe they would be less inclined to use extracts.
I see it like this, at the moment I use Cannabis for PTSD and for chronic pain(Medium pain not severe but it is constant) bud does me just fine, once every like 3 years I will go on a honey oil fad for a few weeks then stop. I kind of look at extracts of high concentrate as something I would use if I got a Cancer diagnoses, I do not want to build a tolerance to that then when I need it, it does not work proper, for that reason I tend to stay away from them and also they are not safe because of people like the guy in that vid using plastic etc etc.... I figure, big pharma, big money etc etc, they can figure out the extract markets. I would rather focus on good bud, and let bigpharma focus on extracts.
I can store this like this for some time. When I make the binder I boil down equal amounts of both and when I get it down to a certain point it goes on a coffee pot warmer and a hair dryer is used. When it turns glassy dump the appropriate amount of grind(crappy looking buds liquified) into the hot resin and press til you can't press in any more grind. I don't prune the eye leaves off the grind. I use a big table spoon to do the press. Then sprinkle a few drops of water to finish the press in 3/8" slabs. This has to be left out to dry before packaging. 
