Now I got actually curious. What is supposed to be a "good writer"? How is it decided that someone is legitimately a good writer?

I mean no offense and I am not defending GRRM's writing style, but I would really like to know what book should I read to have a fair competition.

There are things like Shakespear's work which became classic and while I enjoyed some of his work, I wouldn't be able to get through the books if I didn't "know" he is supposedly one of the best writers ever though.

Then there are more recent writers like Stephen King. I really enjoyed his books through and through but I am still unable to objectively say that he is awesome writer.

How does one decide on that? Are there any criteria that decide that objectively?

Sorry for such a post but I am a simple man, I enjoy the book, I think the writer is good.