I had used binance exchange and had not encountered any problem using it. Maybe japan are just very careful nowadays.
Japan is doing what it should be doing, and that's keeping parasites out. It's mind boggling how people don't understand the one simple thing about the Japan versus Binance situation, which is that you can't enter without permission.
The only thing that did somewhat surprise me was the relatively late reaction of Japan. Binance applied for a license earlier this year, but they just went ahead anyway, probably blindly assuming it would be ok to do so.
Applying for a license and actually beeing granted one, are two completely different things. It's not that you can call it incompetence because Binance knows what it is doing, so they must have arrogantly discarded the rules.