Yeah. Copyright laws in Japan are extremely strict. I would not be surprised at a complete ban on this. This is just a fluff piece like a lot of ads coming in recently.
Japan was behind about developing search engine service. Some people argued that it's due to copyright law (there's no fair use) and it shouldn't be repeated again. So the gov want to encourage AI developing by explicit law.
- As there are no external motives (eg. for profit) held by the AI when analyzing the works it is not a copyright infringement.
- Parsing through whether the data set is legally obtained is not feasible therefore that shouldn't be the limiting factor to further development.
However as the transcript was uploaded last month, things may have changed since then.