Well said. I understand that some people just want to enjoy the show, and that's fine, but there's no good reason…
Trying to argue that anyone of any age is mature enough for sexual content or sexualy implied acting with an adult is pushing the boundaries. This is what criminals say and do to their victims by trying to say they look old enough or "I thought they looked mature for their age" or "they act mature for their age" as a way to try and justify their crimes. Many grapists say they thought the victim looked mature enough for sex. Even though this show is of course acting and not real, the actors still have to kiss and lay on top of each other to simulate sex. A 16 year old and a 27 year old together is plain disgusting and stomach churning in the eyes of people who want to protect the young from their own nievity. This is why there are laws against under 18s performing in sexual content in the majority of Europe where I live.