Not only capitalism entirely based on the hierarchy of ownership, but it also reinforces already existing social hierarchies as those in power receive more profits and capital, and thus more power and influence in a broader society. You cannot say hierarchy is bad and be pro capitalism. Leftist ideologies are ways to try to democratize the economy, which flattens hierarchy. Anarchism is inherently anti capitalist.
What’s the other option? Continue to be fucked by a system the privatizes everything and destroys our environment? Continue to be fucked harder by the billionaire class?