Watching Not Suitable for Work , a new Hulu sitcom from Mindy Kaling , I found myself thinking, improbably, of Richard Nixon . Elected vice president at 39, Nixon was famously described as “an old man’s idea of a young man.” Suitable , a postcollegiate roommate comedy in the tradition of Friends and New Girl , is an older person’s idea of a show about young adults. The cast is relevant and the scripts peppered with internet slang. But the characters bear so little resemblance to the Gen Z we know, they might as well be at Central Perk in 1994. Like so many shows of this sort, Suitable , premiering with three episodes on June 2, is set in New York. Unlike the boho types of Girls and last year’s Adults , who scrape by in the outer boroughs, however, these pals live in Manhattan’s fratty Murray Hill neighborhood. “I’m not cool enough for Brooklyn,” frets first-year investment banker AJ (Ella Hunt), in a lament as dated as a Sex and the City bisexuality plot .…