It's apparent that this time round with the 2020 halving, a bull rally of sorts will most likely occur beforehand. Whether it'll start this year as people price in the event, or how much the markets actually go up as a result of this, we have no idea of knowing for certain,
Definitely agree with you, halving always have a positive effect on Bitcoin price ever since, as what you said, it made Bitcoin mining more scarce. And scarcity somehow affect the price of any items.
and people who give specific figures to these predictions usually have absolutely zero backing.
Well I believe this is just a psychological strategy, making people believe that in some point of time Bitcoin will reach this amount of price, which can trigger FOMO that will eventually push the price higher. I do believe it is not healthy for Bitcoin market though since I favor on a natural price growth than the hyped one.