Explaining EVs even to people that know the game well, has been a struggle for me. It's almost as if the site is doing the audience a service. This analysis creates more questions, but not a ton more.
Perhaps future iterations of the column will shine more light on the specifics. I'm pretty surprised at the strategy the author touches upon. The weather influence on the metagame, how odd it is to run protect on a scarfed Jellicent. It's like they are talking big picture stuff with the intent of maybe narrowing things down? They could make an entire section of that site. What then?
I think there's a good chance that the author of that article is a member here. Thoughts?