The average Japanese person consumes something like 900 calories less than the average American and 400 less than Europeans. They eat mostly lean meat, fish, and veggies, with rice and noodles being the main carb staple (and beer, if salaryman). It's not rocket science, just just eat less.
Guessing Israel wants to use that stealth capability while it can before Trump causes the program to shutter and leaks shit to Russians dChina, who'd eventually share with Iran. Flex the muscle while you can, before the cat is out of the bag (or some other mixed metaphor)
Much of that dubious functionality can be turned off in Win10. Not so in AI heavy Win11