Of course I'm looking for people who can learn. I'm looking for people who will jump onto Stack Overflow and Google before spending a week reinventing the wheel. I'm looking for someone who writes in a dozen languages (like human languages, someone who knows a couple can pick up more very easily).
But I don't want people learning the "right now" skill on my time.
If I need a PHP developer right now, then I'm going to hire someone who knows it right now. I'll preference someone with C skills and I'll preference someone who participates in an open source project. And I'll preference someone who reads Hacker News. And I'll preference someone who has a great profile on Stack Overflow. And I'll preference someone who attends or presents at conferences.
But if they don't know PHP, they're not going to be learning it on my time as I need someone who knows it right now.
There's no need to feel sorry for my team. The things you read on a Hacker News comment reply aren't the entirety of working for me. Maybe you'll be sitting across the desk from me one day and you'll get to work with an awesome team of talented engineers. Carefully selected.