Saying they are a boy band because half of their fanbase may like them for what they look like brings me back to me saying about why judge the band just because of some of the fans, why does that make them a boy band just because some of their fans like them for what they look like, the whole meaning of the term boy band is a group of people put together and they don't play instruments they mainly just dance, so how does the reason why their fans like them determine what kind of band they are?
Shou can definitely sing, he proves that every time they do a live.