When I pointed this out, I was berated for not understanding that Stack Overflow is trying to become the canonical source. Sure enough, a few weeks later, the top hit on Google no longer pointed at the official documentation. It pointed at that same Stack Overflow question, with a half-assed answer that only gave a fraction of the information the real documentation did.
I appreciate Stack Overflow for its strengths, but it's harmful too. Being able to go directly to the canonical source of information for a product and do your job without anybody spoon-feeding everything to you is a vital developer skill, and I'm seeing more and more people who won't bother to lift a finger unless somebody does half their work for them. This project seems like it will push the developer community much further down this path.