Here's a thought... Maybe Stack Overflow's mobile app should add features that make it easier for users to ask complete and high quality programming questions from a mobile device? Maybe add features that compensate for the unique hurdles mobile users face?
There's no reason the mobile app can't save a draft that's in-process, for instance. And there's no reason the app couldn't add special features to improve code entry for various languages. Maybe a gesture-based approach that allowed entry of common symbols.
Of course this would be work... And it would probably just be easier to blame the victims (that is, victims of trying to write code from a mobile device).
I mean, in reality, the same could be said about people with disabilities... It can be difficult to deal with questions from people with dyslexia, or who don't speak English as a primary language, or who are blind and use a screen reader, or maybe they are paralyzed and use some kind of special input device (and yes, these people are actually programmers and do read Stack Overflow).
It may surprise some to know that people who are deaf from birth often are difficult to understand in written form because they often write in ASL, which has different syntax from standard English.
The point is, sometimes we have to deal with situations that are less than optimal, and we need to take steps to make it easier to handle them. We can't just discriminate against people who aren't able to write a perfect question and/or answer.