The young SG guys can be really hot, yes, but I share your impression. The SG boys are beautiful and sexy, but they lack the willingness, curiosity and openindedness about gay sex and the often very positive attitude to sex with older Caucasian guys as other SE Asian boys have. Many SG gay/bi boys are into Caucasian guys even though they are super discreet about it, but there are fewer relatively to other places. Just my impression.