Dual citizenship works outside of employment sponsorshipLet's assume NJPW helped him get a dual citizenship. They'd be sponsoring it and given that he no longer works there and entered on intent of working with DDT, seems like an immigration issue rather than a NJPW issue. Seems like something people would blame American immigration on if it happened in America than AEW, WWE etc.
I was sponsored to work in UK on a work visa - I can only work at that 1 job
After 5 years I can get a residence permit (which can be revoked) - but it allows me to work any job
After 6 years (1 year later) I can get citizenship, which allows me a UK passport and also the ability to work anywhere
Most countries have a similar system
Not sure about Kenny’s status - but I remember him saying he has ‘citizenship’ - maybe he meant ‘residency’ - which should allow him to work anywhere, but can also be revoked if not used in 6 months - country depending
Long and short - i highly doubt this has anything to do with NJPW