I think you nailed it...the message itself is designed to intimidate one to act. And you know what, in all fairness, it is pretty cleverly worded.
Look at the buzz words..."lawyers", "final call","superior court", "cost of your judgment", "assets", "legal action", "out of court settlement".
I think the message itself gets lost and one may only here those words.
Oh my last lifeline. What am I to do?
Thought I would throw it up there for all to peruse (or mock) depending on your inclination.