I attend Mass at an all Tridentine Institute of Christ the King Parish. I have no problem with FSSP. Those who founded that order were good guys who recognized the schismatic error of their previous ways in SSPX. OTOH, as you seem to be an apologist for SSPX, I would think you would have a problem with them for walking out of the schism.
And your "thinking", once again, would be wrong.
I honestly cannot comprehend your chumminess with heretics, your disdain of EENS and obsession with burning Catholics at the stake.