We are talking about quality of writing fiction. There's nothing wrong with being an amateur, but being rude when a professional has a higher skill cap than you is just kind of sad. This man has likely honed his craft over 10s of thousands of hours, respect that. You've basically told me that when you see someone just beginning to practice a skill you have honed you can't tell a difference, or you lack the ability to transfer that concept to a skill you are unpracticed in. If you feel that this is still hard to understand, try reading the Eragon series then LotR. Both fun reads, but you can tell that one was written by someone early in their writing carrier vs later.