My 2c: I get the same feeling some times, but if we just base this on job offers, then we're extremely biased, because the offers themselves are biased.

I've had to hunt for talent myself, and reviewed dozens of software developers, and finding someone with 10+ years of good experience is close to impossible, so I would never have that as a request in a job posting, but it doesn't mean I wouldn't want someone like that in my team.