Nintendo have pulled so much BS that my kneejerk reaction is "what's the REAL reason"? If that's it, good. Nintendo still suck in many other ways and I say it's fair to bring them up every time. E.g. Nintendo Online sucks and it's ridiculous there's a premium pack.

The most cynical real reason I can think of is Japan's tight copyright laws and lack of fair use allowance means they're extremely wary of getting in trouble in the future for copyright infringement and ending up with a class action on their hands, which will probably happen to Midjourney, Adobe etc