Both statements in that sentence are ridiculous. Do you also wear a tin foil hat while having such thoughts?
First, quantum computing is one of those fields for which you need the brightest minds to solve it. Government jobs may still be attractive for researchers, but if they need to keep such developments a secret, it means they have to limit themselves to the people they can actually hire. This means their talent pool will be more limited than that of a company like Google, or a university like MIT, organizations that can always collaborate with whomever they want in the open, including foreign companies and universities. For building a practical quantum computer, they can have big budgets too, given that companies like Google are interested in machine learning, not to mention the pool of investors that would be dying to be a part of the next revolution. Some of the brightest minds we have worked on quantum computing already, in the open. The idea that a single country's government would be able to do a better job, in secret, is preposterous.
Second, quantum computing doesn't solve P = NP. The difficulty of brute-forcing AES-256 is only reduced to that of AES-128. It is something, but not much and that's only speaking about asymptotic complexity. Going from a feeble experiment in building a quantum computer to building farms of such computers to run distributed algorithms on them - well, I can assure you that farms of commodity hardware with capable GPUs will be used instead for a really long time.