While Cohen never (to my knowledge) commented on anarchism, I think of him as an anarch-ish thinker in part because of his anti-institutional, interpersonal relations-focused approach to doing political philosophy: https://twitter.com/mattchuk04/status/1311352320140210177

This essay by @parenthesiseye is one of the first places that I saw the connection drawn between anarchism and a focus on interpersonal relations as "where the action is" when doing political philosophy, and it's stuck with me ever since: http://parenthesiseye.blogspot.com/2012/09/anarchy-as-relationship.html

It opens with this Landauer quote that accords with Scanlon's reading of Cohen:

"The state is a social relationship; a certain way of people relating to one another. It can be destroyed by creating new social relationships; ie, by people relating to one another differently.”

There are many other reasons for reading Cohen as an anarchist: his affinity for left-libertarians, how seriously he took (and is taken by) libertarians generally, his efforts to defend socialism on freedom grounds, his embrace of moral revolution over institutional change, etc.