I dont think its quite that simple, and definately not worthy of being 'PERIOD'.
Whilst dorian yates didnt exactly use HIT he did train with relatively low volume as did mentzer both having no problems with mass.
I think it largely depends on the individual and how they respond. For me generally low volume is more productive both in regards to mass and strength.
it's a 952lb partial deadlift...and jesus christ, im looking at him 'neck deadlifting' 500lbs, and that looks like a good way to seriously damage your neck for life.