It's not a strawman. The inspiration of "the teachings of the Church and sacred tradition" would have to be proved. Where in scripture are we referred to these amendments to God's Word?<quoted text>
What teachings have been amended by the Church?
Another straw man.
I can have both Scripture and the teachings of the Church and sacred tradition as the foundation of my faith. Christ made it so. He founded the Church to teach His message.
The only "riddle" presented here is why you would disregard Christ's church and her teachings in favor of a "scripture alone" theology that actually contradicts scripture itself.
EXPLAIN: "a "scripture alone" theology that actually contradicts scripture itself."