Dear Nandric, stylus drag is a resulting force related to VTF.
The actual "value" of the force in question does vary because of VTF, stylus shape, alignment, record "grip", record weight etc. - IMHO the more important point is how to tame the beast.
The Sutherland video does not take into account, that the LP itself might (does...) "slip" on the platter's surface due to the friction of the stylus. The Sutherland itself is not heavy enough to prevent that. A LP clamped down with considerable force ( by means of a Sota Reflexclamp or other similar screw action clamps which really press the record firmly to the platter ) does it still show stylus drag? Not on a servo controlled DD (Technics, Denon, Sony et al) and not on a Micro SX-8000 with a spinning 40 lbs+ platter and high inertia.
On many tt's out there, the platter doesn't work (sonically ...) the way it could, because platter and record aren't actually spinning "in line".
Cheers,
D.