I wonder if too fine of a cut would not only make it more susceptible to burning, but also drop down the stem because the finely chopped pieces would easily pass through the holes in the bottom of your bowl. Perhaps it would work better with a funnel bowl? It would be an interesting experiment, although I'm not sure I'm willing to risk messing up my blender. The husbeast sure does enjoy my banana smoothies.
And I wonder why YouTube banned your accounts just for smoking hookah. There are tons of hookah videos on YT.