Computers can never be 100% secure. It’s just a matter of how many zeros one is willing to spend, especially when physical access to the hardware is so easy (for nation states).
So where is our deep, persistent infiltration of China?
This is ridiculous defeatism. You are going to need more 0's than exist in the global economy to crack many cryptosystems.
It's also possible to design systems with an intermediate level of security. With your attitude, you might as well leave your house unlocked because any competent locksmith could break in.
https://www.blackduck.com/blog/understanding-apple-goto-fail...
Once you patch the bugs, they are patched. You eventually reach a state where there is no more surface area for bugs.
And that's only if blackmail didn't work.