Craig is attacking Bitcoin for his own benefit by claiming ownership. The reason that Bitcoin is so resistant to the corrupt urges of humans is because it is anonymously owned by the people who have copies of the ledger. Any coin that is centralized (Steem is a prime example given that the oligarchy of witnesses can make a living yearly wage and everyone else has to do the work of posting for 0.001 Steem) is subject to corrupting influences.
RE: Craig Wright Files Bitcoin Copyright: What Does It Mean to You?