where is the quality aspect here?
If the pizza has ability to increase connectivity, fine.
What really counts is the heart-connection, then interconnected & aligned skills and not the size of the team.
Heart-connected teams can be fed by 2 pizzas, may it be 10 or may it be 2 people. Heart-connection creates sharing & including, naturally. Everyone is included, on pizza levels and all other levels.
The 2 pizza team rule experiment could be applied to test if members have an including WE mindset, or if there is a focus on “my plate, my pizza”.