It's unlikely even a single person will accept the 200% organic challenge. People can't do things the hard way, even if they know they should. They always go for the easier way.
If somebody does accept the challenge, they probably won't actually prove they did it, they'll just say they did, maybe take a photo of the end product. But they won't follow a seed from start to finish with posts on the blockchain, like DRutter has done a few times now.