statistically speaking, there is no elo hell. but there is always luck involved. some people just really have crappy luck in that every game they play, it falls within the 44% in which their team has a troll while they are a decent player themselves. statistics doesn't deal with it. they throw it in the outliers and call it a random chance, and that it usually won't happen. except...it happens more often then people think.
again, i'm not saying everyone who cries about elo hell is really having that bad luck streak. but there are a couple out there who are. there are people who use "elo hell" as an excuse when it really doesn't fit them.