"So this is where we may just agree to disagree, when you write "I expect you to mature out of it. If you don't? Not a good fit." I caution that you might find yourself throwing a great developer under the bus someday with this approach. Your mileage may vary of course, usual disclaimers Etc. Not everyone can be a good architect, not everyone can be a good developer, but not being good in one does not preclude one from being good in the other."

Good arguments; that very well could be. My data is different, but obviously our mileage may vary. Plural of anecdote is not data, and all that. :)