I could go so far as to characterise this as a willingness to experience someone else's work. It reminds me of the approach taken by some art lovers who go to galleries in order to understand what someone else has created. It requires that the viewer make the effort to really see the piece, to know the context in which the piece was created, and to explore the feelings stirred up by the piece.
This is not my argument for the proposition that RPGs are art. What I'm saying here is that I've noticed in many indie gamers the same form of appreciation as is evident in people who appreciate art. It's a maturity that wants to understand someone else's opinion and perspective, and I like it.