How is Sola Scriptura incoherent?

Considering that the traditions stem from interpretations based off the writings, sola scriptura would be the means to test the coherency of the traditions.

Nuda scriptura is scripture alone. Sola scriptura looks at the writings and the traditions, with the writings (source of the traditions) having greater relevance.

For example, Jesus has a God …

Would the word literate carry the same meaning with public (common wealth) in 1900 vs today 2020?

A Trinity was first mentioned as G-d, His Word and His Wisdom, by Theophilus of Antioch.

Later, Tertullian would lay the foundations of the Trinity.

But it was not until the efforts to create a uniform Christianity at Nicaea that the concept became the accepted tradition, to create a universal (catholic) interpretation of the writings.

Were Dalits prohibited from drinking water from wells in ancient times? Is there any evidence to support this claim?

So, how does that affect the Athanasian Christian doctrine of the Trinity?

John 20:17] Jesus said to her, “Do not cling to Me, for I have not yet ascended to My Father; but go to My brethren and say to them, ‘I am ascending to My Father and your Father, and to My God and your God.’ ”

But if you read it through the filter of the traditions of a Trinity, you will miss it (like many miss Jesus telling Mary about Mary’s G-d being Jesus’s G-d). That is incoherent.

Can the belief of not worshipping Christ held by Jehovah's Witnesses be disproven using scripture alone?

The New Testament identifies Jesus. Literally, spelling it out in Acts 3.