If a user adds the right keywords - especially in the title - it would still be useful for external users. Say someone googles "PHP Doctrine bootstrap". Right now, they'll see a hit from codereview.se at #4, and stackoverflow at #6. They can jump to codereview to likely see an already completed example with added commentary, or they can jump to stackoverflow to see possible glitches they might have to overcome.
There is a problem in the google summary for the codereview hit - it's missing question content, so as of now the user will have to guess the content by just the title alone. And since there's likely going to be a tonne of "is my code good" posts, it won't be helpful.
So bottom line: the user will have to think about SEO when they choose their title.