Evaluation of duet in Northeast China

I think duet is a vulgar culture. In northeast China, duet performers are often invited to sing at funerals. At that time, I was thinking, is it happy or sad that someone in my family died? There are many vulgar language in duets, such as swearing or telling some sex jokes. I don't object to letting two people turn into actors to sing at the funeral, but we should think deeply about how many children are watching the fun, which is a kind of poison to them. Now, the duet has changed a little, and I like it gradually, which will bring us happiness. However, I hope that the development of duets will develop in an elegant direction in the future, because children will not accept vulgar happiness, and elegant happiness is much better than vulgar happiness.