> The rise of Python at the expense of safer, typed, faster, more principled languages makes me very sad for the state of our industry

There is no rise. Not any more. At best, it's a plateau, and in my opinion, all dynamically typed languages except Javascript are on a straight decline curve, slowly being replaced by statically typed languages.

I noticed that a lot of people who enjoy Go come from Ruby or Python. Go's type system is clearly antiquated and weak, but it's a straight upgrade from a dynamically typed language, which is why it's finding an audience with the Python/Ruby crowd.