In his latest Netflix special, “Black Mirror” creator Charlie Brooker and his collaborator Annabel Jones gather an ensemble of talented actors to comedically dissect the year that was 2020, a 12-month period often accused of being so ridiculous that no one would believe its plot twists if were they presented in an actual episode of Brooker’s award-winning show. More than once this year, Brooker and Jones had to have been told that something was straight out of one of their televised nightmares. So why not comment on all of the dystopian insanity?