I was somewhat inactive during the period 2014-2015 but it is my impression that there were more doom and gloom in comparison to this period. If too many people decides to keep hodling/buying just because of those predictions and when the time comes the outcome doesn't materialise -> problem.
It was WAY WAY different then. There was ZERO, ZEROOOOOOOOOOO of these scammers and jackasses claiming Bitcoin is guaranteed to go up at a 45 degree angle forever to $1 trillion each back then. On any given day, people talked like there was a 50/50 chance of the price going up or down. There was more fear of down probably than anything. Now the market is absolutely nothing but retards and scammers who claim the price is always guaranteed to go up aka a Ponzi scam. It's obviously a recipe for disaster.