You are making this much more complicated than it needs to be.
God gave us freedom. When Man formulate straditions or strictures that are justified through a derivative argument, Man is taking away the freedom that God has given.
AFA your sarcastic point about every Christian denomination being wrong until 1929, I would argue that many Church practices (indulgences, others) may have been believed for hundreds or thousands of years. But if they are not specifically addressed in the Bible, then they are inventions of Man.
"formulate straditions" = formulates traditions
The Bible itself doesn't claim that, so your test flunks itself.
It's not a sarcastic point at all. It's a logical argument. These denominations, all of them, claimed to be guided by the doctrine of Sola Scriptura. So do today's Protestants. Yet both groups arrived at contradictory doctrines. So how can this contradiction be reconciled if "the Bible alone" is to be the final arbiter of truth?