ballbusting can be common but it depends on the people. Ballbusting is not something lots of people would admit to being into because it is not seen as normal however lots of people can do like it as it is a form of domination.
the women can control the man by his balls she does it because of the power it give her
the man gets controled by the woman by his balls this lowers him and makes him feel weak knowing the female can hurt him very badly.
so yes to more kinky couples or people who are into bdsm and bondage this could be popular to the,