Some quotes I discovered from Bishop Sanborn that Pope St. Pius X made to prelates about them being too soft on Modernism. Note: For those who think that Modernism is not a formal heresy, think again.
In a clash with Cardinal Ferrari of Milan on this heresy:
"These miserable wretches, whom by the command of the apostle St. John we should refuse even to greet, for the apostle St. John says that we should not greet these who are heretics."
To Bishop Geremia Bonomelli of Cermona:
"There are too many who have turned aside from the truth and in demanding a reform of discipline there also to respire to a reform of dogma and to harass the Church with the sophisms used by it's most violent opponents."
and....
"I am astonished that you should find excessive the measures taken to confine the flood that threatens to swamp us, when the error they are striving to spread is much more deadly that that of Luther, because it aims directly at not only the destruction of the Church, but of Christianity."
and my favorite one...
"Kindness is for fools. They want them to be treated with oil, soap and caresses, but they should be beaten with fists! In a duel, you don't count or measure the blows, you strike as you can! War is not made with charity, it is a struggle, a duel. If our Lord were not terrible, he would not have given an example in this too. See how he treated the Philistines, the sowers of error, the wolves in sheeps clothing, the traitors in the temple. He scourged them with whips!"
Folks, we have individuals, from Bishop Fellay to "semi-trad" Louie Verrichio who have outright called Francis a Modernist. Assuming that this true, think about the implications of that....