I would agree with that...I suppose my trouble is that Brin et al write convincingly and with a great deal of conviction. Its rhetorically good, one might say. But yes, sorry I see what you are saying and I take your point.
I want to point out I am not FOR these people, I do not agree with them, I am just working through these issues in my head, because I do enjoy Tolkien very much.
As I say, despite all of Brin and other's rants, I keep coming back to Tolkien, I keep returning to this universe that in so many ways inspires me.