It is a bit strange if there is a min bet to receive rakeback because afaik rakeback is not calculated per bet but it should be calculated in overall wager. Lets say someone play and wager $1,000,000 but all bets were made with $0.2-$0.4 worth of btc, is it still counted as dust because of the issue and will not receive anything from the rackeback? Although Dan said that there is an issue with the bitcoin bet and it will be fixed soon, but I think all bitcoin bet should be recorded and players will receive the rakeback later.
Even though I believe that everyone should get rakeback and there shouldn't be "if it is dust then you get nothing" type of situation, I also believe that someone does it as a whole should have a difference as well. I mean a person who wagers 1 million all together and someone who wagers max 5 cents but has 1 million total wagered should not be both getting the same thing.
One of them is risking a lot more than the other, and that is a very important situation. I am not saying that people should not be focusing on betting for a higher wagering amount, of course they could do that but that doesn't mean that we should not be promoting all-in betting neither, many casinos should improve that all together and that is a lot more important for casinos since it leaves them a chance to get a ton of money suddenly vs the guy who wagers few cents who will not leave too much money all together, maybe small by small over course of years.