By their fruits you will know them. God has blessed the SSPX with new religious, churches, faithful for many years and it continues to thrive and grow. And we are not the "neo" SSPX. Respectfully, I disagree with Fr. Girouard. To believe him is to say that all are priests are lying to us or are just plain stupid . Neither are the case.
First of all, to give growth and numbers as proof of God's blessings to the SSPX is a very wrong argument. Wherever I drive, I find huge and modern and full Protestant churches. Are they being blessed by God? What about Islamism, which will soon outgrow Catholicism. Are they being blessed by God?
Secondly, Fr. Girouard always makes a distinction between the rank and file SSPX priests, and the Leadership in Menzingen and District Houses. The ordinary priests only want to do their ministry. They don't care, at least most of them, with the politics of their Superiors with Rome.
Thirdly, the SSPX management has so badly treated +Williamson and many priests in 2012-2013, because of their opposition to an agreement with Rome, that many SSPX priests fear punishment and expulsion. Where would they go? How could they survive, "out in the cold"?
Fourthly, we say Neo-SSPX to show the SSPX of today has turned its back to the instructions of Abp Lefebvre after the 1988 consecrations: NO MORE DEALINGS WITH ROME! WE WANT TO SAVE THE CHURCH, AND ROME WANTS TO DESTROY IT!
Obviously, you are new to this topic of the Resistance, and do not know what happened between 1997 and today. You should order and read Fr. Olivier Rioult's book" "The Impossible Reconciliation", and Sean Johnson's book: "As We Are? A list of 101 changes in the SSPX".