You are a great writer. Your writing was still fascinating even after translating it into Japanese with Google Translate.
I live in Japan, but I thought it was vulgar to talk about these "celebrity scandals," so I tried not to read the articles. But at work, my colleagues are talking about it one after another. They haven't watched TV for 20 years!
I unfortunately agree with your opinion that "external pressure" is the only antidote to institutional paralysis. The scandal of the founder of the management company to which Nakai belonged was also exposed by the BBC, although Japanese TV stations defended it.
So what will come after the decline of the "old people's club" TV stations that are causing institutional paralysis? Unfortunately, it is social media, where scammers are rampant. Japan will follow the US's footsteps, and in 10 years, a scammer will become prime minister.