They didn't "get lucky". They were lied to by the company and sold a car under false pretenses.
Edit: I had the fuel economy bit wrong, my mistake. I've removed that portion. Thanks @mikestew, @gnoway, and @GavinMcG for the correction.
I agree that it's a little weird to say that they got lucky, but a pretty big hint that they actually did is that I wish I were a part of the settlement. It's not like anybody was actually harmed. These owners are getting a great deal.
I think that sticking VW's head on a pike as a warning to others that may follow would qualify as "useful". The fact that owners are compensated for not getting what they thought they were buying can be viewed as a bonus.
I guess you could make that same argument about all law enforcement.
There are plenty more cars on the road from even older times, with far worse emissions.
But I think the concerns are less about getting these specific cars off the road immediately, and more so ensuring that other manufacturers are scared away from trying to pull this shit again.