That is because 99% of newbie questions are already answered... and when someone just asks the same "what is a pointer in C" question, without even taking time to search if it's already been answered, it pisses off the community and they get negative feedback as a result.
I don't think a one-to-one chat with an experienced developer is a better solution for noobs, quite the contrary. But time will tell, maybe the guys who sign-up to coach on askadev will never get tired to explain the difference between an integer and a float type over and over and over again.