John 1:3 refutes Arianism regardless of John 1:1

Even if you can justify an "a god" translation of John 1:1, John 1:3 says The Word created everything that was created, therefore The Word can't be a created being.

All things were made by him; and without him was not any thing made that was made.

That's the KJV translation.

I've been looking into the Coptic texts of the Gospel attributed to John for various reasons.  And I've found JWs will use Coptic Texts of John 1:1 to support their translation of that verse.  But the same Coptic texts have this same implication in John 1:3.

Everything came into being through him, and without him nothing came into being. That which came into being

https://depts.washington.edu/cartah/text_archive/coptic/coptjohn.shtml

Even the JWs own translation doesn't solve this implication of John 1:3.

 All things came into existence through him, and apart from him not even one thing came into existence.

https://www.jw.org/en/publications/bible/nwt/books/john/1/

When discussing the Nicene Creed it's often made out as if in that Creed only the word Homousias makes Arianism incompatible with it.  (Of course that word only conflicts with Arianism in an Ancient Greek Platonic conception of what Divine Substance meant, to us every Son is made of the Substance of their parents.)  In fact full Proper Arianism is incompatible with the Creed simply from saying "begotten, not made", Arius and JWs see Jesus as a Created Being.

Now Semi-Arianism may accept the "begotten, not made" part, but some Semi-Arians were fine with Homousias as well.