As a guy with a Bachelor's in Art, the concept of critique is practically innate to my being. I'm used to pouring myself into something, then putting that something on the table for others to shred with feedback. Separating the thing you made from who you are is insanely freeing and a powerful step.
So why not help each other the same way as Product folks? Check out the attached - absolutely love the concept (and embarrassed I didn't proactively come up with it myself)
The central premise of this article is quite straightforward. That the lone wolf nature of product managers has in some ways stunted the speed of our growth. The answer, PMs could still develop faster if learning as a team. I’ve seen it with designers before.