The license allows anyone to fork the repo, but any changes to that code need to be used on the chain decided by the witnesses.
Please have the license updated to make explicit that this is allowed.
It still won't be open source but it will satisfy some concerns not only of people here but also of STEEM token investors and prospective STEEM token investors.
The lack of clarity on this point is a dark cloud that impairs the value of the chain.
I think this is a reasonable thing to do, and as soon as we have the spare bandwidth to discuss the details I'd love to do so with you and the rest of the community.
The spirit of the license is simply to ensure that use of the code benefits holders of STEEM and Steem Power (whose efforts and time and attention are the reason the code is able to exist in the first place), and such a clarification fits very well within that spirit and scope.