If you read world's most successful author Stephen King, then there is plenty of telling. Many of his books start even with a long narrative that meanders s between an omniscient narrator and characters' own reflections. It works for him because thats how he writes, and he has a story that he loves telling. 100 Years of Solitude is a an exercise in narrative telling that doesn't let up. J.K. Rowling is very fond of adverbs. All these authors get to sit on the Squirrel Creek Liberal Arts College Creative Writing Major naughty step, because they don't use styles which fit 2000 people at once with the same assignment and a template 5 day marking turnaround. It seems to me that there are "rules" which have been made up by creative writing tutors to try and level out all their students (customers) which essentially amount to deleting some of the tools a writer has that are in any way difficult to use, assess, or that require innate ability. Screw the rules. I think as a writer you have to be able to use a variety of methods where and when appropriate for your story, and be able to read it back and tell if its any good or not yourself. If you can't liberate yourself to write how you want, how are you going to create anything; or enjoy what you are doing (because you almost certainly aren't going to make much money out of it)? Cormack MaCarthy uses a very spare writing style that hits all the CW "must do" targets, but he is also a very good writer and that is his style. No one is going to be Cormack MaCarthy because they don't use telling. Were there even any Creative Writing courses before the 1980s? The vast majority of successful authors in the history of the world had no idea there were any rules, let along having pondered an MA in Creative Writing.