You are misunderstanding my point.

My point is that letting someone handle certain things and even listening to their advice is not hierarchical.

So the person written the comment doesn't need a hierarchy to let their coworker handle organisational tasks nor do they need it to listening to their coworker's advice.

So just because they like it that way, doesn't mean they like the hierarchy nor that they want it, but rather that they like some tasks more than others and acknowledge expertise.

I am not saying that there is no Hierarchy. I just don't think they want it, just because they like other elements in their cooperation.