Still they are allowing the sport betting even poker if I am not wrong and that is what mostly gambled and steamed ones then what is the actual reason of the ban?
So its just fornthe sake of showing the platform is being responsible but without actually not really disturbing anything?!...

Oh well, maybe they just want to show everyone that they are really doing something as far as streaming gambling in their platform. Nevertheless, they know that they are going to lose big revenues if they allowed it to happen. So probably there could be loopholes that can be exploited based on their bans and so in months maybe they will be back to normal when everyone forgets about the issue. Again, it's all about the business, because it they continue with the blanket ban, streamers will break away and look for other platforms to continue.