Sinbad's signature campaign was not a success. I can't call it a success because many bad things, i.e. mixers got banned after Sinbad's accident and it was also known long ago that Sinbad was a renewed Blender. Sinbad's main source of income probably was Lazarus group, during their existence as Blender and after being renamed as Sinbad.
The project was not fully successful, but the signature campaign project was in the sense that they ran it for a long time and paid in full every week. A substantial sum of money was also left in escrow. Prior to my participation, I was unaware of their connection to the Lazarus organisation.
Yes, it was known right when Sinbad.io started:
For anyone doing at least basic research about Sinbad.io, it's been easy to spot how fraudulent Sinbad.io was: Sinbad.io was a re-launch of Blender, a famous mixer operated by criminals: Crypto mixer Blender has been rebranded to Sinbad, says Elliptic:
https://cointelegraph.com/news/crypto-mixer-blender-has-been-rebranded-to-sinbad-says-ellipticHave centralized mixers = get shady operators behind it
For Sindbad.io = operators wanted to wash own coins from crimes and hacks, get clean funds from Bitcointalk for mixing.
Sindbad.io operators abused Bitcointalk to have fresh funds for mixing criminal coins.
Alone from any basic research, shady history of Sinbad.io was known.
If Royse777 did any basic research how shady Sinbad.io has always been, now Bitcointalk won't have any problems.