I think the author didn't want to go too in depth for the sake of simplicity, very similar to the blog post itself, which just hit the surface. That being said, many more dimensions can be made out of easy - when I think of easy, I think of technically easy, management easy, drama levels, west coast nice vs east coast nice easy, etc... Depending on the individual they could probably split the word easy alone into 5 to 15 dimensions.