This was somewhat covered in the comments on your answer to my question about the SF dynamic,my question about the SF dynamic, but I wanted to repeat it here:
The problem isn't that we don't want any questions from developers (gasp! developers!!), the problem is that the type of questions developers often ask don't fit well here.
A canonical example would be a developer who's throwing together a webserver running in Virtual Box on their laptop and is having some problem with networking - maybe throw in VPN issues because they're working at home. The problem isn't that it's a dreaded developer asking, it's that we don't consider that to be the proper - professional - way to run a web server, so OT, or Too Localized.
We've struggled with defining this - there was a LOT of heated discussion about "production quality" systems - but I don't think anyone's come up with a concise way to summarize the distinction.