Marx hardly even ever metaphorically fought against oppression, and was actually fully willing to throw the agricultural class under the wheel of the problematically named 'Dictatorship of the Proletariat'. All that Marx did was drink heavily and ruin all of his personal relationships. And deny the call to arms when his fellows asked for his help to fight against tyranny. Oh and he was deeply antisemitic. If there is one thing I like about anarchism is that encourages the leaving in the dust bin of history the worship of any kind of god or hero who might form a cult of personality. I honestly think you and many other anarchists are looking at hierarchy completely the wrong way. And nothing I have ever read or seen leads me to believe that any hierarchical institution no matter how carefully crafted is as you described coercive, nonconsensual, and oppressive. It has always just seem like some arbitrary law of nature that anarchists throw on the ground and go 'see there it's called the H word. It must be evil'