Fr. Stafki's case is classic.
Just because a priest is good, holy and highly beloved by God doesn't mean we should imitate that priest.
Worthy of imitation and full of Sanctifying Grace/charity are NOT the same thing.
For example, there are probably some very holy adults with Downs Syndrome living a holy child's life. But due to the fact that my mind is much more complicated (filled with thoughts and information) than theirs, I can say without hesitation that their path to holiness is NOT God's will for me.
Fr. Stafki believes that the will of God is expressed in the will of HIS superiors, and that it trumps even the cause of truth. He is wrong about this, but since he doesn't know that he is wrong, he is not guilty.
Subjective innocence might get a person to heaven. God judges you based on what you knew and what you understood. But subjective innocence doesn't make you worthy of admiration or imitation.
I'll see your "Fr. Stafki trusts his neo-SSPX superiors" and raise you "Fr X in the Novus Ordo believes that Obedience is where it's at, and that one has to be officially united to the Pope/Conciliar Church to be good." There are plenty of those. I'm sure there are a few good, holy priests in the Novus Ordo. It doesn't make them any less wrong about their priorities.
But for those of us "who know better", joining them is simply not an option. God has given us more, and he expects more of us.
Specifically, we know that Obedience comes under the cardinal virtue of Justice. Whereas Faith, Hope and Charity are Theological virtues which have FIRST RANK. That is why it is not wise or permitted to follow OBEDIENCE when it goes against FAITH. You are chasing after a lesser good (a hundred dollar bill is blowing away) and ignoring a greater good (saving your family from your crashed vehicle, which is on fire).
The fact that a man was confused, emotional, and didn't know what to do MIGHT excuse his behavior chasing after a hundred dollar bill he dropped after getting into an accident. But the fact remains that he SHOULD HAVE saved his family and not worried about the hundred dollar bill blowing away.
That is why we can say that objectively speaking WE ARE CORRECT and everyone who disagrees with us is simply wrong. Truth is objective.
That is also why we can't obey our parents when they command us to do something against charity, like murder someone. Faith/Hope/Charity always come first.
In conclusion, I have nothing against Fr. Stafki personally, so I most certainly don't hate him. I don't need to tear him down. God love him, I hope he saves his soul. But I can't follow his course of action, as it's objectively less than the good I am currently following. If I joined him, it would involve a malicious compromise on my part.
But for me to get to where Fr. Stafki is, would involve something bad: willful ignoring of the truth, and/or brainwashing and/or drugs and/or brain surgery.
I can't un-know what I know. And it's not just my personal opinion, but it's right there in the manuals of Catholic morality. Therefore I can't follow him or any other "holy priest" in the neo-SSPX.