Earlier quoted context omitted.
The article specifically addresses this with the fascinating quote from Dave Berry where he reports that the definition of the word unknowingly changed in his head over the last few decades: > “I always thought jerk meant asshole. At least I thought I always thought that, although the quotes you cite seem to suggest otherwise. So to answer your question: I have no idea. You may be right!”
The important difference between "jerk" and "asshole" is that "asshole" goes through glass. If you're driving around, then somebody cuts you off, and you mouth "jerk" at them through the windshield, they will smile at you and and wave. While "asshole" will be totally and universally unambiguously understood.
This is a great hard and fast rule of thumb for photocopiers as well!