I myself have had zero stings of any bee or wasp in my life so I prefer to gently coax them away from my plate. Some people are absolutely terrified about them though so "just let them be" rarely seems to be good advice.
https://en.wikipedia.org/wiki/Vespula_germanica
Edit: actually I don't know which one is more common, Vespula germanica or Vespula vulgaris. I wouldn't be able to differentiate between them.
In my experience your hand is a minor annoyance that they'll fly around and continue eating. Only way to have peace is to lay traps around your eating area.
I’ve found wasps extremely persistent and confident in ways most insects never are.
It’s one thing to gentle swat them but when they come back for 5-10min straight it's understandable why people don't like them.
I also got bit on the mouth as a child when I drank a can of coke that had a wasp inside so I'm not exactly unbiased.