I guess I do like those kind of streams where streamers are true to themselves that they are being paid by the casino but once runs out of money they'll turn on their own bankroll. I guess the only real gamblers who do streams are those who have few viewers these days most who have lot of views kinda trick the viewers they're that rich and do lot of shilling.

I guess they can as long as they follow the rules of the contest. They may generate more crowd to join if they know a known streamer is trying to join the contest. Most gamblers find it amusing this way and it's good for casino as well, better to allow them rather restricting them.