Just think of them as internet points. Limited real value. Like karma on reddit - how much trouble do people go to to get that? And it can’t be traded for anything.
They have a certain budget for giveaways here, that might be loosely related to user counts? PBs increase with the number of active users. If most get 100 extra points, to get an extra entry or two in a power draw, it reduces all our odds per entry about the same. We are experiencing an inflationary cycle devaluing our internet points!
Also, many here have some experience with their customer support on real products. It is professional and helpful. You can’t really extrapolate from their forum support.