You are preaching to the choir here. I agree wholeheartedly with St. Athanasius.
I have been on FR long enough that my position on tradition should be known well enough. You don't have to convince me.
St. Athanasius didn't start his own movement, he persevered from within, and put his faith in the Lord. "You are the ones who are happy: you who remain within the church by your faith"
It's never a good idea to leave the Church, even during a rough patch. Let them leave.
You missed his point. St. Athanasius was speaking to the flock who fled the heresy of the diocesan churches and bishops. He was teaching that the "church" is those who adhere to the Traditional Faith, regardless of location of worship.