This is the correct (and massive) caveat for everything StackOverflow posts from their own data. It tells you a lot about some developers and absolutely nothing about others.
I use it a lot for my secondary languages, but when writing a well-documented language/framework like C# .NET, I never use it. The Microsoft docs cover everything.
Also, a decent amount of SO traffic is stolen by SO-copy SEO spam sites, too. I used to frequent it, but haven't needed to in years (it seems to more rarely show up in searches for the problems I have, even though I avoid the spam sites, too).
I use it a lot for my secondary languages, but when writing a well-documented language/framework like C# .NET, I never use it. The Microsoft docs cover everything.