The problems I’ve noticed with Stack Overflow are a few and hard for me to narrow down but basically: - google used to return really relevant results for SO, and it stopped doing so at some point a while ago - moderation on SO has gotten progressively more horrible. can’t tell you how many times I found the exact, bizarre question I was asking only to see one comment trying to answer it and then a mod aggressively sh…
I see "answer as comment" in my most mature tech subjects because people are afraid of downvotes. In my experience, the most mature tech subjects are carefully guarded by a small community of very unfriendly "fastest gun in the West" types. The C++ community is incredibly unwelcoming and negative towards most questions. Note: Comments can only receive upvotes. (In theory, comments can be flagged as off topic, or offensive, but assume -- for my commentary here -- they are not.) Examples of more mature tech subjects: Python, Ruby, ASP.NET, Java (language/foundation libraries), C# (language/founding libraries), C (but not yet C++!), Win32, etc.
For less mature tech subjects (or faster moving), you see many more answers. Example of less mature tech subjects: Python AI/ML libraries, Java/C# open source libraries (Spring, etc.), C++, Qt, Gtk+, Zig, Swift, Golang.