They didn't bother outlawing possession of CP until 2014 https://edition.cnn.com/2014/06/17/world/asia/japan-child-porn-law Distribution was legal right up until 1999
Under the new law, people in possession of child pornography have one year to dispose of it before they risk prosecution.
Very considerate!
This isn't true for a lot of them if you actually take a look. Consider the top 10 instances according to https://fediverse.observer/list
OP may not be good at phrasing things, but their concerns are completely legitimate. Almost ALL of the biggest instances are unsustainable on their own or have had to make compromises in order to stay online.