It's not the board. It's about Amorim itself who tries to prove if all of criticism toward him about his formation is wrong. So he keeps use that three backs formation, while he know that formation doesn't suit his team well.
Things worsen with how his club adapted the long ball, and only pray to his forwards to create something for him. It makes his team rarely progressed the ball through the middle.

As the result his team never progressed. Otherwise, His team getting regressed so hard as there's no creativity from their mid and always rely upon their wingers.