Part 1 of 2 You wrote "Almost everything is wrong" with my comment and all you have proven is that you found some news of the 13 cardinals' letter that is nothing close to the recent coverage given to the KofM. 
My comment is about the mendacity of the US media. Only a handful of Catholic media is covering the pope's attempts at reconciliation with the SSPX, the latest being that they may be offered the status of personal prelature ala Opus Dei WITHOUT first accepting Vatican II’s declaration Dignitatis humanae (religious liberty) and Nostra aetate (Jews) https://cruxnow.com/global-church/2017/02/03/traditionalist-leader-says-prelature-may-best-option-unity/