Why does everyone come out and give out some outlandish prediction as if it's bound to become reality.
That's simply because they're bullish in it and have decided to hold BTC for long term. It would be one of the best moments of every holder if BTC reaches $3M. But knowing that when, no one can say until it happens.
I don't think that's optimistic, it's delusional and unrealistic, and it's not simply a prediction. Those who make predictions like bitcoin will reach 3 million or 14 million like Saylor have their own agenda. They want to attract public attention, polish their names...instead of being optimistic and making predictions that they believe will happen.
If they are truly optimistic and it is a prediction that comes from their belief in bitcoin, they should give reasons, evidence to convince the audience. But they don't, they just make random guesses without thinking.