"You argued that Arians in the fourth century didn’t base their beliefs on scripture."
This is a misrepresentation of what I said: I claimed that they started primarily (not exclusively) from speculation: that it CANNOT be this way (because it is not "logical"), therefore it is not so, and then they also looked for biblical passages for this conclusion. One is the mistranslated Septuagint It was Proverbs 8:22, the other was Colossians 1:15.As far as I know, they did not use Revelation 3:14, because according to them they did not think that being the "arkhe" of creation was the same as the first creation.
The method of today's JWs is the same, on the one hand, based on an unproven assumption, a conspiracy theory, that the YHWH was "erased" from the original manuscripts of the New Testament. On the other hand, what is left is also mistranslated by NWT.
I don't think that "the modern scholarship" (??? everyone? all? some? with full consensus? oh really?) would say that, you gave some excerpted quotes, I assume you haven't read any of their books in their entirety. I have no idea who Maurice Wiles, Rowan Williams, or Karen Armstrong, and how much authority they would actually represent in theology or church history.
On what basis did "modern scholarship" come to a completely new conclusion? Perhaps previously unknown early Christian sources have come to light? They don't describe what they based their conclusions on, and you, as an authority, wave it in front of me.
Well, according to the scientific methodology, you have to start from the primary sources. Have you read through even one entire writing of a single apostolic father? Or do you just collect quotes?
This is also a typical WTS method: quote scissoring. This is the "work" of the Bethel workers, Raymond Franz also described it well, to look for a catchable half-sentence in lexicons that can be flagged: "See? Even he said that!"
Then the discussion partner should run after the resources. Well, no, it's well known, the unfair citation method of the WTS, it was clearly shown when they cited some supposedly "supporting" scholars about the NWT, JW critics asked them, if they really meant it, and it turned out that they really didn't...
"the Nicene/Athanasius faction was prone to using the language of philosophy to define their beliefs in terms of “essence”, something rejected by many as unscriptural."
Yes, this was indeed an argument of the Arian faction, that since the term "ousia" is not found in the Greek Scriptures (which is true), it follows that the theological formula described by this term cannot be true either. Well, this claim would require proof. The term "ousia" indees doesn't appear in the Greek Scriptures, but there are many other terms known and used in Greek philosophy do, such as: pleroma, logos, arkhe, hypostasis, physis, etc. So the apostles were not at all averse to the use of terms and concepts that had their own precedents and parallels in Greek philosophy as well.
Furthermore, the Arians also used the concept of ousia to describe their position, when they first described the relationship between the Father and the Son with the concept of heteroousios and then homoiousia.