MSW will not address the substance of the letter but will merely psychologize (in the cheapest fashion) and invent bad motives for its authors and signers.  This is the ugly anti-intellectual or perhaps anti-reason strain in contemporary Catholicism manifesting itself yet again and leading those who engage in it into the sin of reviling.

Contrast it with the letter itself, which clearly does the exact opposite, examining the ideas communicated by Pope Francis but not speculating regarding his motives or culpability.