This is an interesting article, which doesn't explain the answer to a basic question: why does Japan care about personal near-field weapons for passengers in private jets?
It's hard to understand the use cases where these are any sort of a danger to society compared to just ownership of the jet.
I think the reason is many companies have shed their private jets for timeshare jets like Netjets offers. The pilots flying these don't always know who their clients are and the planes can still be used as weapons. I doubt Apple has done this but many have and their is no way for gov. officials to know the difference.
It's hard to understand the use cases where these are any sort of a danger to society compared to just ownership of the jet.