Going by this video alone, there weren't any indications (in my opinion) that they're only focusing on the cure. It did mention that the government is trying t

Going by this video alone, there weren't any indications (in my opinion) that they're only focusing on the cure. It did mention that the government is trying to understand the condition (which requires figuring out the causes) but the rental sisters were not treated as a cure. They're treated as last-resort treatment for some men. It is not scalable though; if there are a million or so men already in that stage, addressing the causes won't help, it is already too late for most. Note that this isn't an issue to Japan either, it is becoming a bigger issue in other countries like US, UK, India, China as well. In addition, you have not provided any source as to your assumption as what the cause is. We have the words of one men already in the video saying he was bullied and the society is tough on bullied people like that.