I've read this with a bit of bemusement and certainly some interest as well. I consider myself to be a fairly intelligent person, yet I'm just not getting it. Or maybe I am.
I joined Poetry Circle over a year ago, and unfortunately do not participate in commenting or posting as much as I'd like to, but I try to read as much as I can as often as I can on the site. I am consistently amazed and often awed by the talent and diversity of the writers and their poetry here. There's plenty of stuff that I'm not wild about, and some that I can't even imagine got posted (. . .wait a minute, maybe that was my own stuff).
I've had my sorry ass stuff totally rejected, often criticized, sometimes surprisingly elevated and more often than not, thoughtfully critiqued. I've even had a poem pulled from the dank cellar of the rejection pile by an editor and brought back to viewing light.
Sure, it would be nice to have someone explain why your piece got rejected. I'd also like to know why I got picked last a few times for gym class basketball teams in sixth grade. Or why I didn't get an A+ on every term paper I put my heart and soul into. Stuff happens and as much as we'd like to know why, we're not always entitled to the time and attention we think we so deserve.
But I keep reading the work here and every now and then, I write a poem and I get something right (or almost right, but I keep trying).
Writing isn't about ego. Attacking those who don't embrace your words is just plain silly. Try to take a step back and see what you can learn at a distance. Either that, or you just distance yourself from anyone that doesn't share your viewpoint.