The paper is badly written, and so I haven't invested the effort needed to clearly understand what they're proposing, but I see no indication that the authors understand the nature of the difficult problem solved by what we are coming to call Satoshi Consensus. Until they can give a clear description of the problem and why we struggled to solve it unsuccessfully for 15 years (to the point that most of us dismissed Bitcoin when it came out) I don't think it's worth listening to their proposals for solutions.