I don't think that the streams are scripted and I have no problem to watch streams of sponsored players if they announce in the beginning of the video that they are getting sponsored. It is more shady if they don't mention it but when you research it and find out that they are also sponsored, than it all stops for me.
It could be scripted. After all, we will never know and just enjoy the spectacle from the streamers. And if I watch the video from that streamer, I feel a bit jealous of them for being able to win the game with an amount I could never have imagined. But then again, I'm just a small player who can only dream that one day I can win a big amount, even though it's not as big as the streamers.This is why I believe that we are not seeing too many streamers really caring about losing too much, they literally end up losing millions and move on in some cases. When they win they probably get the money, don't know how that works if the money was given to them for free, but maybe that's their payment or something like that?
No luck this month to double/triple my monthly bonus, good luck for others with your bonus. I think I did it wrong with this month bonus, I should use it for wagering purpose instead trying to double/tripple it but I wager few hundred dollar only which does not really affect my current progress to next VIP level. 
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what an insane win for him. It's crazy to win that kind of money but it also crazy to bet $500 in just 1 roll. Anyway, he deserves it coz he is taking risk very high. Actually, my max bet is just $10 per roll because of lack of fund, it’s my first time to see someone who is betting in slot with $500. A big player with a lot of experience, anyway I will also experience that kind of bet limit. 