alt Hacker NewsFault tolerance is a hard problem, assembling qubits for simultaneous gate operations is another hard problem. There are several dozen others.
It is exceptionally unlikely CRQC will be achieved in our lifetimes, if ever. The closer example is economically-viable fusion power production, which today has better odds than CRQC but remains solidly in the "maybe" zone after decades of global investment. Even though fusion weapons had been achieved half a century beforehand.
The bombs were actually relatively easy problems, in the scheme of things.
It is never wise to listen to people who's jobs and funding are connected to the development of a technology on when that technology will arrive. The answer is always "soon".
Fusion also came to my mind but after thinking about it for longer I think it's a bad argument. The challenge with fusion is mostly around scale and efficiency to make it competitive against other energy sources (and net energy positive in the first place).
For CRQC it doesn't matter if they're massive expensive energy monsters. Even being able to break a single chosen key is enough to be a problem and once you can do one you can definitely do ten or a hundred.