I see a lot of advice being given in these comments, and I find it a little alarming that my own preference hasn't got a mention. Just leave them be? I've had plenty of wasp nests in sheds, roof spaces, garages etc and never had a problem peacefully coexisting with them. Almost everyone I've spoken to about it shares this sentiment, and generally wouldn't do anything about it unless it was in an especially risky loca…
The other part might come from having different types of wasps. The ones in the article look like yellowjackets, which are extremely aggressive. They also tend to nest in holes in the ground. Yellowjackets are bad news because if you accidentally step close to their nest they will swarm you, often getting multiple stings in even if you are quick to run away.