The newbies vastly outnumber the experienced people (in every discipline), and have more to ask per-capita, and are worse at asking it. Category 2 is much smaller. The volume of Stack Overflow was never going to be sustainable and was not reasonably reflective of its goals.

We are talking about a site that has accumulated more than three times as many questions as there are articles on Wikipedia. Even though the scope is "programming languages" as compared to "literally anything that is notable".

But there are other places people can go, such as https://software.codidact.com (fd: I am a moderator there).