Your sense of church history leaves much to be desired.  So-called 'traditional teaching' only goes back to the Council of Trent---which FINALLY established that there are SEVEN sacraments.  It confirmed traditions that had been in practice since the twelfth century [but not from the apostolic period].

Back around the year 1000, most poor parish priests [and most of the poor] did not receive the Sacrament of Matrimony.  They had common law marriages.  Only the nobility [laity and hierarchy] were married in church.  The reason for not having poor parish priests marry in church, was so that bishops could bestow parishes upon their own sons.

Amazing that you stated that the "pope's personal teaching comes last in the hierarchy" when JP II's teachings [many of them personal], became the dominant law of the church for decades---and he practically rendered bishops' conferences null and void.  What Francis is teaching IS supported by the consent of the MAJORITY of cardinals and bishops.