Before I start, I know this has been discussed multiple times during the last 2 years. Still a sizable number of programming question appear on Meta regularly. Keeping in mind that the content base for new users (FAQs, etc.) on Meta has grown considerably during the past couple of years. Its my gut feeling that answers to majority of the question a new user would ask can be found via searching on Meta. Will it help if we add a new-user restriction on Meta that you should have posted at least one question/answer on the main site(s) before you can ask a question on Meta?
Side note: Is there a relevant query on Data Explorer that can provide some facts on how many users have asked their 'first ever SE undeleted-question' on Meta?