There's a problem with mobs: they gang up and lynch anyone who isn't part of the mob.
This doesn't happen just in westerns. It's been happening since the dawn of time, because it's a natural property of crowds: the least able thinkers are the ones most likely to be swayed by group-think. And one of the strongest group-think arguments is "Outsider, danger to group, kill it", which is a very effective survival M.O. for life below a certain threshold of intelligence. The combination of these two aspects of mob behaviour is predictable.
That makes TFS and TFA a bit of an exercise in wishful thinking. Development by mobs could (in theory) work well, but only in the very unlikely situation that the mob has a statistically improbable makeup in which independent thinkers are dominant and are also well informed and technically experienced. Unfortunately that scenario lies in "pigs will fly" and "hell freezes over" territory.
The perfect number in team programming is two people of similar experience, because then they can't gang up and form a lynch party. If they don't immediately agree then it creates a stalemate which can be broken only by rational explanation / defence or by terminating the pairing. It's an ideal situation, yet not too hard to arrange.
Mobs don't really have a place in intellectual endeavours, and programming is one of those.