Well, bad in my mind is relative. I might not be able to answer them, but someone else can, and wants to. Some people don't want to spend a lot of time or energy answering, either. So, they don't.

Can't tell if the emoji means, whoa, that's a lot of time, or whoa, that's not a lot of time. :) It really depends on the question, what I know about the answer, and how thorough I end up being.