Not true at all, I assume that you have not spoken with an officer in a long time? Domestic Disturbance is usually a "frequent customer" call where they go in and the male pleads his case, the wife stupidly lies and says she over reacted... rinse and repeat.
Much more "action" and "violence" from people trying to run so that they are not busted with drugs.
You could even watch Cops on tv and see way more car chases and other people fleeing because they didn't want to get caught with a few baggies.
Unnecessary violent encounters are rare and make up such a tiny amount of the overall calls that Police deal with. For every dumb moves like this Starbucks incident , I am sure their are 1000's of great moves that go without notice. Can't make a generalization based off of a few incidents.