Well, not all of them are unrealistic. Just the "sponsored" ones obviously are. Playing with fake money, winning millions and not even having a geniune reaction when winning this big, it's just annoying.
There are some real people though that show you the reality. Degens like bossmanjack and theGoobr are losing losing losing, mostly they play like total fools but also sometimes the results happening are straight up crazy.
Hmm yes that's what makes me laugh seeing them, logically the success of getting a big win should definitely cause a very happy reaction in them (streamers) but as we see that they just see it as usual, and actually if for example we respond to it by relying on a rational and common sense point of view then it should raise suspicion for the audience, or I mean there is something that should be suspected. But yes maybe not everyone can really use their common sense correctly which is the reason they are very easy to fall into because they are too tempted by something they see and in the end yes they will also be one of the victims who will lose a lot of money consistently if their understanding and point of view are not immediately corrected.