This is a rehash of a previous article, which is a complete lie. I summarized what the original Japanese source says a few days back:
https://news.ycombinator.com/item?id=36147226
Slides published by the Japanese government shows that they're evaluating how to deal with copyright and AI. Their view is that current laws has few (but not zero) restrictions when it comes to training AI. However, strict copyright restrictions do apply to AI generated works even today. If it's proven that an AI-generated work is similar to or based on existing copyrighted material, that would be regarded as a violation and criminal charges may follow.
Here's the slide (in Japanese):