That is good decision to stop watching casino streams. These streams can affect our minds in that way which we might not even notice and they can make us want to gamble later on. And dear it is good that you understand how these streams can impact you and are choosing to focus on more useful and responsible things to do. With doing this you are avoiding danger of getting into bad gambling habits and you are also saving time that you could use for more enjoyable and valuable activities.
I also think that it is better not to watch casino streams because I don't see the point in it at all.
Firstly: what good will it do me if the streamer wins a huge amount of money? Yes, he will act like an idiot and pretend in front of the camera, but did he really win or is it just a setup? I don't know and won't find out.
Secondly, if he loses everything, he will sit in front of the camera sad, and this will not give me such pleasure either. I will simply empathize with the streamer, and this will ruin my mood.
In general, there is no use in this activity.