If the NOM is harmful to souls and displeasing to God, as we Traditional Catholics believe, then, agreeing with Father Hewko, I don't believe that God would work miracles that could be construed as an "endorsement" of said Mass, regardless of what one might say about its validity. Father Hewko quoted Our Lord's (alleged) words to Marie-Julie Jahenny to the effect that the NOM is "odious" to Him and contains "words from the abyss". That latter is, IMO, a clear reference to the replacement of the Catholic Offertory with a тαℓмυdic table "blessing".
We also know that, regardless of the "scientific evidence" that Bishop Williamson keeps citing, it would be childsplay for the devil to simulate such "miracles" so as to confound "science". That is why the first thing the Church does in examining such claims is to test the theology, the doctrine, and the virtues of the individuals related to the alleged miracles or revelations. If they fail the theological test, if there's anything doctrinally questionable, or disedifying, about the miracle, they would instantly get the old non constat from the Church ... regardless of the "scientific" tests. So, for instance, even if there was "chain of custody" for the evidence (which in the case of the Polish "miracles" there doesn't appear to be) and it's proven to be living heart muscle, how difficult would it be for the devil to acquire some heart tissue? It would be no trouble at all. We had one case with that possessed nun where the devil simulate a full virgin pregnancy and virgin birth.
Why would the devil simulate such miracles vis-a-vis the NOM? To snooker people into believing that the NOM pleases God and is not objectionable or, if it is in fact invalid, to snooker people (including Traditional Catholics) into believing that it's valid.
This really isn't that difficult, so I don't understand why Bishop Williamson doesn't recognize that the devil can simulate miracles.