[Dominick]

What I read was:
Apart from that, do not forget that the Rite reformed by Pope Paul VI the common Rite of the Church. It is not your task to alter this state of things, or so to speak about this Rite, as if it were of lesser value; but rather to aid the Faithful who have an attachment to the old Rite better to find themselves once more in the Church.

...

Nevertheless, you must not assign a priority to the form of the Liturgy, in which you have the privilege to celebrate.

This implies that some in the FSSP were saying the Novus Ordo was a less preferred Mass.

Is this true?

[CatherineSiena]

This implies that some in the FSSP were saying the Novus Ordo was a less preferred Mass. Is this true?

Yes.

This is a main point of contention between the PCED and the FSSP - whether the Novus Ordo is an inferior, or merely an equal preference to which they do not avail themselves. The former is the common belief of the FSSP founders (including Fr. Bisig) and many existing members today. The latter is the attitude the Vatican wishes to cultivate within the order. Whatever Fr. Devillers believes on this count, he is careful to defend the legitimacy and validity of the Novus Ordo, and speaks the same language as the Vatican and most bishops on such matters (the Latin Mass is one of many diverse and equal rites, etc.).

From this standpoint, I think the fear that the SSPX will not be able to be critical of the reforms once they return to Rome, has some basis in fact. As in the secular world, those who promote tolerance and diversity change their tune when it comes to tolerating those they deem not tolerant enough to that same diversity.