I consider this as gambling related discussion but I can be corrected on where to move this topic, but what if in the next month Bitcoin suddenly jump to $30000 or more will gambling promoters still get the same rate that they are getting in Bitcoin like me I'm getting 3000 sats per posts will the developers and admin reduced the amount or retain it, this is one of my motivation in promoting gambling sites, I dream of getting $1 or more per posts equivalent when Bitcoin pump.
I think it was impossible to make their rates high yet there are huge possibility that they would lessen the Satoshi count of their payment but still where same price/amount when converted to your local fiat. It would always depend on the campaign and the website you're promoting but in most cases if you promotes gambling platforms, they often make high rates if and only if the price of the Bitcoin would reach such huge amount.
Meanwhile, most campaigns nowadays are based by either USD or had it's pay rate price that where limited to what they give you in USD but just converted on BTC. Nevertheless, you shouldn't be bothered by the payment, as long as you post well in the forum you'll soon get what you deserve.