Wouldn't it make sense to strip out a lot of unnecessary code to get to the point faster and allow others to reproduce the issue at hand easier? Just because the question is omitting validation and sanitation doesn't mean it has flaws. Isn't that the nature of SE questions? If your question is about a piece of logic deep down in your stack, you're likely not going to post 3 layers of code above it.
Hmm, could be, but I think if someone cares enough to write a minimal working sample, they'll also care enough not to have SQL injection vulnerabilities in their code (if only because people might lecture them about this instead of answering the question :). More often than not these issues are found in code dump like this[0] where nothing has been cleaned up.
