It's a mythology-level motte-and-bailey argument.

"Man" (specific) has a better life than "women" (plural, all on average), therefore, oppression. Watch the arguments, see it happen again and again. A king or a sultan or a cult leader or a president has a good life beyond that of a queen or first-consort or harem-leader, therefore the farming peasant who is sent off to be stabbed because a knight got bored and wanted to stab a peasant, has a better life than his would-be-wife who now lives in a castle instead of a midden heap.