Stack Overflow is declining, except it's still so well populated with moderators that the author of the article struggled to be able to answer a question quickly enough for it to matter, and he can find no alternatives to it that work as well.

I dont know anything about the internal politics of SO, and I dont think Ive ever asked (or answered) a question, but I use it every day.

It is absolutely the single best resource for developers on the internet, and thats amazing.