Yes, Fr. Pfeiffer is every bit as important as the homeless bag lady on the corner. Concedo.
Every soul was bought with a great price, and therefore precious in the sight of God. That should go without saying on a Traditional Catholic forum.
The loss of each soul is a tragedy -- nevertheless, God can and will condemn souls to hell all day long if necessary. That should be a sobering thought for each one of us. No matter how much good we have done, if we STOP being good and fall from grace, or try to play by our own rules even when they contradict God's rules, we can't turn to God and say, "Hey, you NEED me!" because God doesn't NEED any one of us, any more than He needed the Jewish people to accept the Messiah en-masse. Yes, He loves them and hates to see them perish, but how many of them have in fact gone to Hell over the centuries? Meanwhile, He gave His grace to the Gentiles and they (broadly speaking) became the ones who did God's will. Our Lord spoke about this in His parables.
My point (above) was that Fr. Pfeiffer is not important relative to other people. In movie terms, he's not one of the stars; he's one of the "extras" in the worldwide battle of Good vs Evil taking place today.