a project that can pay with two types is very good as you say dividing in half namely getting bitcoin and altcoin or tokens even though there are quite heavy rules to participate in the campaign but that will make us develop knowledge
at least we can know that the developer takes the campaign seriously and appreciates the work of the bounty hunter. but not many are like that, most just pay with tokens and they don't necessarily have value in the market. just a speculation but we have always learned and worked with systems like this.