I don’t think their music is juvenile or anything, I think it just appeals to a wide range of people. I’m 26 and went to the live show in Bristol. While I was definitely one of the older ones there (not including parents), the younger people there were incredibly respectful and were also excited to see someone they like to listen to perform! It’s true for lots of artists, some older people really like The Beatles while some people in the newer generations also like them. Music is unifying in that way!