Druski’s turn as host of “Saturday Night Live” on Nov. 7 came with an audience attached, roughly 35 million followers across Instagram, TikTok and YouTube who know him from sketches he writes, shoots and posts himself. The booking made him the first digital creator to host in the show’s 52 seasons. “SNL” has hired from the internet since Andy Samberg and the Lonely Island arrived in 2005, and both of this season’s new featured players, Grace Reiter and Saidah Belo-Osagie, came up making content. Quinta Brunson and Issa Rae started online too, but they hosted after crossover hits had already