Facebook does an interesting thing with the browser console

I accidentally left my browser console open a few days ago, and ended up on Facebook.com at some point. Suddenly, my console was filled with this message, one for each request:

Facebook's browser-console warning

It’s an interesting way to (attempt to?) protect users, and I can only think that Facebook must be such a target for these “paste this text into this window for awesome features” scams that a bold notification was worthwhile.