By any chance, have you checked the abbccoin if it is really their original work?
Most of the whitepapers are really copy of copy of old projects, they are just changing the names inside.
In any case, copying is a taboo, even if it's their old project. If you are strong and smart enough to be able to develop a project, there is no reason to copy it from an old project, all documents should be renewed completely to fit. In this case, obviously it's plagiarism when the number of sentences is too much. Unforgivable!