Well you are not doing the same thing in your vid,...you are doing the Claypoolesque muted strum thing and you are doing with musicality. Totally different.
The abrasiveness to me come comes from the strings hitting the pickups or the frets. I'm cool with thumb slaps, pops,...raked triplets and such. But to just whack the strings in time is denying yourself the opportunity to use time, space and rests to emphasize the groove,....for the sake of what the whacker thinks is emphasizing the groove. Really all you are doing is creating unnecessary signal spikes that worst case scenario could fuck something up.
In reality I'm bitching over non-important stuff,...whack away if you think it makes your playing more interesting (this is directed towards whackers in general,...which this thread is full of in one way or another

but not in a way that has caused any rashes on my backside).