I'm not a quantum computing person, but I've read a few white papers and understand what they stand to solve. The promise of quantum computing is so probabilistically solve NP-hard problems in constant time.
An NP-hard problem is one where its very easy to check the solution's correctness, but extremely hard to find a correct solution. This concept is what underlies cryptography and our current paradigm of encryption (and yes I know there's "quantum-safe" protocols now) in that if you have the right key, you know very easily that you do. And if you don't have the right key, you're almost certainly NOT going to guess the right one.
That's sort of what the announcement gestures at, in that it solved a problem in minutes that would otherwise take 10,000,000,000,000,000,000,000,000 years.
But this is all just research in a lab with ideal problems, not generalized solutions to large scale problems. As far as we know at least lol.
Definitely interesting in the world of computer science, though.