I agree with you, but I think it is still important to be anxious and raise awareness of these problems. Without the panic, would Y2K have been "recognized as a solvable problem and solved"? We need to continue to raise awareness of these really big potential problems, even if we have confidence that they are solvable.
At some point I looked at my own anxieties and simply decided to not be anxious: do what I could about what I could given resource (time included) constraints, be prepared for eventualities within reason, and otherwise carry on.
My biggest recurring concern now is how I'm not anxious. Should something horrible happen, I may be disconcertingly unconcerned - having done what I could in good faith, there is/was nothing else to do but accept reality and move on.