I think the fans do acknowledge that the squad is limited, but nonetheless feel Clarke needs to go. And I think the lack of balance in the squad is if anything a reason to be more adventurous.
The way Clarke plays is as though the gameplan is "be solid, take no risks, and hope to create a chance out of nothing". But we don't have the personnel to do that - not enough solid defenders to sit deep, and no flair players to create chances on their own.
During qualifying most chances were made by overwhelming opposition with runners from midfield and on the flanks. But its basically impossible to do that while playing defensively.