Exactly what did you expect with these irrational predictions? The similar story applies for every year and especially the halving. I've heard practically almost every single number between 0 and the moon (possibly even beyond). Even if we assume that each of them is a "Bitcoin expert", that still does not give them any credibility when the price is concerned (economics).
The founder of Mastercoin predicted a big range: $500 to $10,000.
Predicting in such a huge span is pointless.