MrBeast and a million other youtube channels flex by giving away money, wasting money, etc. Slot channels are no different. The math works for them.
Does that mean that the math works for everyone? No. Some of these folks might be degens, and some of them have no camera presence to really build and milk their audience. People take marketing shots. Not all marketing shots pay off.
As for 89/65/56, while negative EV, is most certainly not a gigantic loser overall. Yes, it is a loser, but he ran bad for sure. I am guessing that Strip slots are set worse, but on the other hand high denom slots tend to be set a little better. The real question is: did he really start rolling for the camera at 89/65/56?
So Vegas Matt is a former MLM "businessman"? More info?