The AITA social consensus is a specific kind of groupthink which differs from nearly everyone I know in real life. I assumed yard2010 meant the specific AITA social consensus and not general human agreement.
Even the premise of deciding who's right and who's wrong is miserable. Most problems are like those daisy-chains of padlocks you see on gates in remote areas[0]: there are multiple factors that caused the problem, and removing any factor would remove the problem too.