You are engaging in some well-known logical fallacies, particularly hindsight bias. Linking a past event to an outcome we now know often ignores the many other past events that had no clear future or resulted in nothing significant. It is also important to highlight that this comment is not against quantum computing.
Well, yes, obviously. Since we can't predict the future we can't know which wild bets are gonna pay off, the idea is to expose yourself to as many as possible, rather than cut yourself off and say "aha, but that's the hindsight bias fallacy!". And this one in particular has a proven use case — Shor's algorithm, given a large enough number of logical qubits, can be used to break all existing RSA based encryption.
Also, I'm really struggling to identify with the naysaying around this thread. Every year we improve the error correcting (bringing the number of physical qubits needed to represent a logical qubit down), and increase the number of qubits. So what exactly is the worry here? That the secrets the government have dragnetted won't be relevant anymore by the time we crack it, due to the prevalence of Kyber?
