Nah, people are vibe coding lots of apps that no one cares about, but this is more like going through Stack Overflow and answering the most upvoted issues that don't have answers. These are published problems that have prior interest, for decades usually, and a few snarky internet comments don't undo that.
To continue the analogy, it’s like writing answers that are so convoluted that no one can understand them.
Yes, although a counterpoint to that is that if these weren't long-standing published problems that have stumped humans, would anyone care? What is important here, the problem/proof, or the fact that they are famous problems that have stumped humans (and therefore make good bragging material).
I'm not sure that a problem being famous, or hard for a human, is the same as it being important.
Take Fermat's last theorem as an example - was a proof of it ever considered to be, then or now, consequential, or was it the Paris Hilton of problems - famous for being famous? A problem whose legend grew because it it so simple to state, with the challenge that there might be a simple proof, and that turned out to be so difficult to solve that it therefore became prestigious to do so?