it looks like a scam to the outside or it devaluates all the existing Hive and HBD
That shouldn't be a reason to get a lower APR. I don't like the reason to get a lower API just because of rumors, there should be math behind it! If the volume of HBD starts to go crazy then we should go down... HBD will never be a truly stable coin, it is a token with an algorithm to try to get some stability to the USD. If you want to screw the apr just to convince people that it isn't a scam? Transform it in a real stable coin then... And people who don't come to the project because they say that HBD is is a scam because of the APR will find another excuse not join the project.