I enjoyed going through the article. Was a good read, for me it helped to reshape my perception on the meta.
About fish, I feel the tension too. I am trying to suggest new directions for a long time now but people still stick with the same old strategies and mainstream idea's.
The challenge for Fish decks is finding a strategy that can keep up with Gush, Drains, and Workshops, all of which require different answers.
This is not a new challenge, fish always tried to answer different kind of archetypes. The challenge in my opinion is not to start your deck with 4x Null Rod and see the various possibilities.