https://suttacentral.net/an8.27/en/sujato

“Mendicants, there are these eight powers. What eight? Crying is the power of babies. Anger is the power of females. Weapons are the power of bandits. Authority is the power of rulers. Complaining is the power of fools. Reason is the power of the astute. Reflection is the power of the learned. Patience is the power of ascetics and brahmins. These are the eight powers.”

Moral indignation over grievances is literally all they've got. Maybe they'd accomplish more if they didn't expect everyone else to do the work for them.