It is better for us to believe in ourselves rather than believe in streamers who usually most streamers have the goal of gaining a lot of trust from people who see them only with that they can benefit from the many people who register and gamble at the casino they promote. In addition, as you said with those who work for casinos by publishing easy wins so that many people are interested and try it. Beginners who are usually more easily attracted by wins or the many advertisements that are spread than experienced players, because for someone who is experienced I think they will not be easily attracted and already know that what the streamer is doing is nothing more than just promoting and all companies do their promotions to the maximum even though sometimes it can be deceiving by not being in accordance with reality.
It is indeed useless for us to trust streamers. But for those who like to watch streamer videos, it would be better to just consider it as entertainment. It would be better not to affect our gambling interests while watching.
Some casinos work with famous sports athletes or big figures with many followers and do streaming. I will not see how easy it is for them to win in the bets made. I will see it as entertainment only, although I rarely watch streaming for gambling.
For those who already understand things like this by watching gambling streamers as entertainment, it may only apply to those who are experienced, because for those who insist on getting their victory, they will look for references to trusted casinos that they think are easy to give victory to their players and by watching like this is one way they can do to get information from the many casinos that operate.
The number of casinos that work with several famous figures could be because they will also do their best in terms of marketing which aims to attract more customers, even though the casino spends quite a lot of money on its marketing, but I am sure the funds that come out can be returned in a short period of time, seeing that gambling is quite popular with many people who are interested in doing it and if they advertise attractively it can make them get a lot of customers as well as the benefits.