You need to do basic reading into the doomsday clock. The primary concerns right now are catastrophic climate change and technological threats, including nuclear technologies. Regardless, many nuclear theorists and academics including Noam Chomsky (known war hawk and military industrial complex supporter) also think we are at an increasing threat of nuclear war.
Yup. And that single well placed mole could have 100 or 1,000 security experts working on their behalf. It is not as though the mole would have to design the hack, only pass necessary documents to a military grade hacking group then implement their modifications.
I think it is a win-win for Apple and Amazon to spin it this way. They get to deny that they were compromised, and if that gets disproved they can easily say they were cooperating with national security operations and get away without any damage.