The basic premise behind two-pizza teams, at least as given here, is flawed. While it is true that if a task requires limited communication, a small team could

The basic premise behind two-pizza teams, at least as given here, is flawed. While it is true that if a task requires limited communication, a small team could complete it quickly, most significant tasks require more than a little communication, in which case, adopting a structure that limits it is counter-productive. If you have a small team whose members all have a deep understanding of the goal, the strategy for achieving it, where the problems will be, and what trade-offs are possible, then they can achieve a lot with the minimal necessary communication, but you do not get any of that for free just by making small teams - that would just be cargo-culting the issue.