.... there will be a economic crash in about 1.5 years from now.
Used your common sense here.
1.5 years is just an inch away and do you really think government will not do anything within that period.
If and I say IF it happends will it be a good idea to buy bitcoin before the crash or will bitcoin crash like the others.
No one knows what will happened and the effect of it in cryptocurrency so it's all about your decision out of your own self analyzation.
If that's the case then you must do your assignment now and plan a strategy on what will you do because 1.5 years is again, just an inch away from now before this economic crash prediction by your fortune teller friend will happened.
The thing is, there are a lot of central banks buying gold. For e.g Hungary central bank bought 28000kg worth of gold, must be something right? Or maybe they like jewelry. EDIT: The last time they bought a lot of gold was in 1986.