They have just pulled the numbers out of nowhere. As for why the prediction is so far in the future, I could image it being so they can get paid to list other predictions/make other shit coins themselves and predict those for far in the future too as they're less likely to be disproven (I guess).
If you're buying a coin worth 866 nano dollars now that's going to be worth $20 in the future, most people will probably buy as many as they can rather than working out that $1 is probably a reasonable amount to waste on such a thing (at most - though the chain or liquidity pool will likely die/dry up before 2050 too).
Honestly, my expectations are way too low, I'm not expecting it to skyrocket, it'll always have plenty of zeros after the decimal.
But admit it that this predictions gives me something positive about this since you are holding this coin?

but yeah this is an exaggerated in prediction area because how could a coin that almost have no value will increase that huge when there are so many project with great potential ahead of this?
Personally, it sounds too exaggerated and I highly doubt it that it'll ever be worth 1/100th of a cent, and that's already too much. I've got a little over 2.000.000 coins, which were distributed by Binance. I'm not going to benefit by selling them, they're worth close to nothing. Chances are, I'll keep them in my wallet for many years to come.