One of my favorite moments in Deep Space Nine is when quark and Sisko are on a camping trip, and Sisko goes on the usual spiel about how greedy ferrangi are..
And Quark fires back by pointing out that his people have never had war, genocide, or slavery, and Sisko's got nothing because he knows humans can't say the same
I feel the scene is deeper than that. Quark isnāt just dunking Sisko, heās shining a light on the fact that Sisko doesnāt see the Ferengi as they are, rather he uses the surface level similarities of capitalism to apply his human anxiety about pre-post-scarcity to them instead.
Thereās also the episode where the three Ferengi go back in time to (I think) the Roswell incident in mid 20th century USA.
Quark is repeatedly appalled at the stuff the hu-mons are doing to hurt themselves and destroy the planet. Smoking and testing nuclear fission bombs come to mind.