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The question is to yourself, did you ever watching a streamer or youtube gambling? Is quite normal went they got a promotion, nothing wrong with that but just don't surprise when some streamer playing with big money.
Here:
https://www.youtube.com/watch?v=lx58B-D4aoQ from Juicy, I watch him even he got sponsor money cause is entertainment nothing wrong and the important the result is real that all even that came from sponsor money.
In his video description, he give description
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
*THIS VIDEO INCLUDES PAID PROMO*
Yes this is also a promotional scheme of the casinos in which they provide a balance to the youtube streamers who have good subscriber base and they show they are winning high amounts on particular slot and players get attracted to that casino in hope of winning.This is old technique and discussed many times here also.I think there are many Youtubers like @xposed who are paid to play on different casinos and they will automatically tops the chart.
You do have the point and also the outcome of those streamers who had been playing would neither show up a big loss or big wins because we do all know the probability.
So it would leave out neither negative or good impression depending on the case even if its a sponsored money you cant still predict on what would happen into your bets
but since you do have bigger bankroll then you would most likely end up on hitting some good ones since as a promoter you wouldnt really care at all
as long you do the job on whats been told.