First and foremost what I look for in a priest is whether he was ordained in the old rite by a bishop consecrated in the old formula, because I have serious doubts about whether those ordained by a new formula bishop are really priests. The OP mentions nothing about it, and focuses on a Novus Ordo bishop's dismissal of this priest. The fact that she mentions that the SSPX is accepted by Rome now, tells me her mindset is different than mine, that she only goes to priests or "priests" in union with Rome.
Therefore, for me, thus far this entire thread does not even answer the first question about this priest