Even if we find a form of quantum encryption,
And quantum computing scales , it renders the current encryption obsolete.
Isn't these two statements describe the entire history of cryptography which I think is over a thousand years old. We keep coming up with cryptography algorithms which have always had an expiration date when they become obsolete.
These two statements describe the entire history of human
technology. As long as humanity continues to progress, pretty much everything we come up with is doomed to be superseded by something better eventually. Cryptography is merely a subset of that.