Some people can be pretty critical when it comes to roleplay samples, and the people who don't like them might've experienced that part more. Either that, or they've heard more stories of that kind of critique when they didn't want it. Or maybe, they just rejected them /without/ reason, without giving them any pointers. That's just my guess, anyway.
Some people on FeralHeart can be a bit judgmental, y'know? But I'm alright with roleplay samples. I don't think you should be too harsh when it comes to them, though, like if you don't like their style of roleplay, you could just give them a critique/some advice. Not mean, like "you're really bad, please don't use * that's awful", more like "Hmm. Well, you're actually really good - My only suggestion is that you get rid of the *'s, if that's okay?" or something like that. Shouldn't just reject them straight out because you're "literate."
My point is, there's a bad side and a good side to it. It's not just roleplay samples themselves with how I see it, it's just the person who receives it sometimes, y'know
I hope this made sense argh