With its distinctive approach to the superhero genre — for starters, most of the superpowered characters aren’t heroes — the satirical Amazon series “The Boys,” which returned to Prime Video on Wednesday for its fifth and final season, has provided a fantastical look at themes and events that many times felt eerily real. Its chief antagonist, Homelander (Antony Starr), who wears a stars-and-stripes cape, is all-powerful but craves adoration, becoming an authoritarian leader who surrounds himself with yes-men. A police-themed hero, Blue Hawk, kills an unarmed Black man. A villain named Stormfront is a Nazi who grows her base by...