> Quorum decision making in those circumstances keeps those things in check.Depends upon the composition of the quorum. If the quorum is mostly "eh it works, just ship it", jugaad, chabuduo, corner cutting engineers, then I've witnessed adverse results.
Conscientious engineering that delicately balances trade-offs is difficult to teach, and poorly discerned by most casual observers (even other conscientious engineers casually observing) in the short term.