The bankers don't support libertarian technology as pet projects and if it was one of theirs you'd see hints of their mindset in the design of the project itself.
In addition, no central banker could ever conceive of releasing a decentralized currency and diminishing their own power. It's like imagining that a priest would tell people to just go start their own religion.
Why not? Central bankers are just trying to de-legitimatize the idea of decentralized currency. Why not release their own version of one, then smack it down to prove a point.