EM,
Then are you okay with going to a Mass of an FSSP priest who left the SSPX after ordination who does not impart error or heterodoxy at Mass?
Did I say that? With an FSSP there is always the issue of Mass taking place in a church which has been profaned by the Great sacrilege. By necessity and if the conditions previously mentioned are fulfilled and if there is no grave inconvenience you are obliged to fulfill your duty at Mass. One may assist at a sede Mass as well under the same conditions.
One should not tailor his spiritual life around the antics of Bishop Fellay or the fraternal warfare between the SSPX and the resistance.
There are much bigger things in the Church for which we might be concerned.
Folks need to get back to being just Catholics and not partisans. Heaven and your final end is the only matter of importance.
And for the parents and guardians of the children, so much more so.