Here’s a sign of the times: as I’m writing this review of “Apple Cider Vinegar,” a Netflix series about a woman who achieved internet celebrity by faking a battle with cancer, my colleague is reviewing “Scamanda,” an ABC series about a woman who achieved internet celebrity by faking a battle with cancer. The confluence of wellness culture, medical misinformation and social media — the noxious brew that’s propelled vaccine “skeptic” Robert F. Kennedy, Jr. to a cabinet nomination — has produced plenty of inspiration for Hollywood. But the flip side of such ample source material is that it’s...