I would say that if someone asks a difficult question it's often difficult because it's very general, so you don't have any specific point to answer that you know will satisfy the person asking.

On the other hand, if someone is writing misinformation then they provide specific statements which still may be difficult to correct but you have those anchor points you can refer to.

So I guess the thing here is that if someone, after asking a question, writes a BS answer they actually refine their question and narrow its scope, thus making it easier to answer.

I usually see broad questions about rather simple things unanswered, but very specific yet difficult questions answered