http://iowacomicbookclub.com/wp-atom.php die Maskenmuffel
definition of Maskenmuffel:
Grouches that refuse to wear masks, as in ‘Die Maskenmuffel weigern sich, Masken zu tragen‘.
Trust the Germans to come up with one word for the grouches that refuse to wear masks in this pandemic: Maskenmuffel. The word is surely a contender for top new word for 2020, in Germany.