Not that I think anything I say will convince you to my thinking, but I didn't say "the CIA is spying on your phone so that the Russians and Chinese don't have to". I'm not sure how you got that from what I wrote.
In an ideal world, no one can hack my phone. This is why I support Apple and Google and Microsoft and all the others doing their very best to keep my devices as secure as possible.
In the worst-possible world, enemy nations have hacked my phone. Because if they've hacked my phone, they've also hacked those of my politicians and military.
In the real world, the only way for my country to be able to defend against enemies is to be as-good-as or better than those enemies at hacking my phone.
That's why I support it. Because I have a sneaking suspicion that truly awful people are working hard to hack every device out there, and the best infosec defense is a good infosec offense.
I don't disagree with you that "if you create a weapon you better be prepared for your enemy to use it against you". But a worse scenario than that is for my enemy to beat me to the punch and I'm standing here with sticks and stones.
The thing about an arms race is that once it starts, it's pretty much impossible to get out of. I didn't start the infosec arms race. It would be nice if the race didn't exist at all. But it does.
Only a "political doofus" would prefer to pretend otherwise.