The tldr on Furbooru is that if you have a DNP on Derpi, they will not honor your DNP, let people upload your work, and tell you they are just as related to Derpi as E621. It doesn't matter how much proof you give them that you're the artist, they will still tell you to make a Furbooru account, to make a new DNP, and then sit and wait like everyone else. Then you can only ever deactivate your account and you've technically signed up to their shit site forever. I guess they have nothing to do but take other people's pony drawings and give them a hard time about the DNP way after the fact.
yes, it was called 2010~2012 when it was almost completely on /co/
Lightningbolt is one of society's cooler women