As a 6th grader, I also find this annoying. I only say those two things because I like to annoy the people saying them. When someone says WHO ASKED or WHO CARES I just say, Nobody asked for you to be born or nobody cares that you said that.
Every time I have a good point in an argument someone always has to say "who asked🤓?" or "Your mom🤓". I swear they just spit out the most fatherless or overused comebacks.