I don't know where you get that news from. 80%? Why would a long term holder suddenly dumps their coins. I mean holders who have been holding bitcoin for more than 2 years will suddenly dumped all of the sudden and want out? I don't think so. They have been holding it for such a long time that it doesn't make sense to just dump it right now because they have lost their faith in the market. It doesn't work that way and I'm sure that long term holders are very intelligent and not be swayed by this kind of FUD and will just pull the trigger and push the sell button.