A string of documentaries are taking aim at problematic millennial hits such as The Biggest Loser and America’s Next Top Model – but who’s to blame?Caution: the 2000s have become a crime scene. The reality television my generation once watched as escapist comfort – built hastily and clumsily, before anyone quite knew the rules – is now being dusted for fingerprints by a younger cohort fluent in the language of harm, certain that cruelty was the point. The past six months have brought a spate of brooding postmortems revisiting The Biggest Loser, To Catch a Predator and America’s Next Top Model – dodgy network TV experiments that monetized humiliation at scale.And while the critiques are frequently justified, they’re also conveniently calibrated for a judgmental media landscape where retrospective outrage doubles as a growth strategy. “Gen Z wants to get in a time machine and fix the errors of 20 years ago,” says Kristen Warner, a Cornell University media studies professor. “There was no...