I saw the footage and my first thought was exactly that of the OP. Tens of suitcases means tens of seconds delay. In an incident that gives you at most a few minutes for evacuation at least some of the dead are attributable to the actions of those carrying suitcases. That is criminal negligence in my book.
I now see another response quoting a Russian reponse indicating there was no congestion. Technically only the last survivor coming out could answer that question. For me, it seems strange that all the fatalities were instantaneous, while the survivors were unhindered. I'd imagine that with a broken up fuselage but not with a unbroken fuselage on fire. Perhaps the OP is overly emotional, but it's emotion pointing to something that is clearly wrong: people value belongings wrongly in case of serious accidents and the training should help people cope with that. I once saw a video of people trying to get their backpacks in case of a flash flood. They did not survive. Your property is basicly worthless compared to you being alive. We should learn to extend that to other people in case of emergency.