>B-21 sized monster

Unmanned stealth bombers make sense. You can pump them out cheaply, they dont endanger trained pilots, and you can actually send swarms of them over enemy cities to drop freefall nukes on them, even if they dont agree to be bombed and you had no deal with them to ensure they dont try to shoot them down - unlike what Trump did in Iran.

>>64417839
TWZ report

https://www.twz.com/air/large-cranked-kite-flying-wing-drone-appears-at-chinese-test-base

>>519283709
That thing is the size of the B-21, btw.

https://www.youtube.com/watch?v=kzhdqKqjFJY