How do the Sola Scrptura folks react to the Dead Sea Scrolls and other more recent discoveries of ancient Biblical texts not among those canonized by Martin Luther?

In response to A2A:

However, if one is using the Bible as a premise and traditions, how does one evaluate discrepancies between the two, as traditions are interpretations of Bible passages as their claim for validation.

Even Jesus questioned how the Messiah was David's son.

My cantankerous beagle is very badly behaved at the dog park and always starts barking at the other dogs. Would pepper spray be an effective method to correct his inappropriate behavior?

Since the Bible is a collection of writings (literally what biblia means), you will even find that while Matthew and Luke have genealogies, Paul wrote to Titus and Timothy not to pursue foolish genealogies.

Actually, Luther was influenced by the books of the Masoretic Tanakh and did, originally, include the Apocrypha.

If you study, you will find passages in the Orthodox Bible, not in the Catholic.

Why would my husband cheat on me with an ugly fat woman?

The influence of the Christian Old Testament was the Septuagint, which predates Jesus. Luther, also maintained the Septuagint philosophy of law, history, poetry and prophets, in ordering, while the Tanakh followed Torah, prophets (Nevi'im) and writings (Ketuvim).

The New Testament was established as part of creating a universal (catholic) interpretation for all Christians.

Just as there are a few discrepancies between the Masoretic and Samaritan Torahs.

If there was only one man remaining on the Earth, would this be regarded as extinction?

Nuda Scriptira is scripture alone. Sola Scriptura is writings authority over traditions and does not imply Biblical inerrancy (see above in regards to Jesus, and genealogy to David).