They didn't pay their developer and copied the whole commit for them to be able to use it. This is a clear sign of a "SCAM". This is now their Official Development page : https://github.com/BitcoinInterestOfficial/BitcoinInterest . It was updated last year.
These guys can't be trusted. Don't be fooled by airdrops and forks. If you buy into it, you'll lose what you have.
I just wonder why no one from the developers longtime do not reply these kind of serious facts. May be it is really better to wait and do not invest until a dev. make a clarification.
We have replied to everything, people keep posting the same things because they do not read the previous posts. We try not to spam our thread with the same answers as we feel this thread should be used to post important updates and to keep our community informed.