I love Lily and think her show is hilarious. Having been born in the states, you won't see this kind of television over there. Most of the time, she says things that I've thought, but never said. While her songs rarely come up in socially acceptable conversations, she has given me something to listen to that makes me laugh and take some of life's harder situations less seriously. I love her music and she puts on a great show in concert.
If you are thinking of watching her show, keep in mind that Lily appeals to a niche market and if you aren't part of that group, you may not like her. If you find that you don't like her, you are welcome to not watch. She is 22, with limited life experiences and has found a way to profit from being outrageous. Just because BBC has given her a spot doesn't mean you have to contribute and watch. Thank goodness you have more than one channel on your television.
So she occasionally does things that people think are overboard. Think carefully about your favorite stars and I think you'll find that some of them occasionally do something that people think is ridiculous or overboard.
This show only says what a few people from my generation like, but I don't think it necessarily indicates the kind of people we are. I grew up watching an American show called Beavis and Butthead, where the two characters did some of the dumbest stunts on TV. Despite that, I have grown up to be a responsible, tax-paying, law-abiding, successful adult.
TV is intended to entertain. If people keep that in mind and don't take it so seriously, the viewers won't grow up to be idiots. It's more dangerous to give this show the power to say that it will affect the future through its content. If this show doesn't entertain you, change the channel. Even better, go take a walk.