The worst developers I've worked with take 2 weeks for tickets that should be simple. That would mean doing 1 easy ticket every day or two makes you a 10x....
I've always hated this term and the mindset around it. I think organizational practices, intelligent engineering strategy, etc are far more important to the output of a team than hiring one genius dev.
I attended Fullstack Academy in NYC, completed in February of this year. I had some CS fundamentals under my belt from college before I attended. I'm currently employed as a developer and I feel like my education has properly equipped me for the Junior Dev role. Many people in this thread are saying that they must continue learning after the bootcamp - I'd be really surprised if any CS major decided to stop learning about programming after completing college. I'm extremely happy with the quality of education I received at my school, but I can't speak to other programs.