I'd bet that such doesn't apply only to Polk, but to JBL and Klipsch as well and you know why? Just because their selling their "popular ranges" to BB stores; that's all.
I'm sure if Wilson Audio & RBH (just to name a few) develops a popular range to be sold thru BB stores, a lot of the so-called audiophiles will start to express disdain for them either and you know why?
Just because any single human being can buy them now, at an affordable price, so all the magic involved in being an audiophile (and getting pretty expensive & exclusive stuff) fades away...