But with XRP (Ripple) over and over I see posts and youtube videos that talk about XRP being worth hundreds and some even claim over a thousand within 5 to 10 years or less!
There are many that "predict" whatever suits them best. If they convince some more people buy the coin they try to sell as expensive as possible, why not?
Ripple is by excellence a speculation coin. There are many good news and partnerships around it, real or not and there are many supporters - mostly by interest.
Ripple's "haters" (the realists imho) usually tell that's centralized, that's not a real crypto coin and it's not to be trusted. This should be enough to stay away of it. But the mirage of easy money is more powerful, so... people keep buying it, then also start promoting it.
Since it's centralized, anything can happen. Even thousands of $. But the likelihood of that.. I'm not convinced.