Wow. Your response is about as long as the article. Have you thought about writing a column? You would be good at it.
I agree with the essentials as you said, “Christ is God”, “Christ died for our sins.” “Christ is Lord and Savior.”
But as St. Paul said - “We see through a glass, darkly...” (1 Corinthians 13:12)
As of the non-essensentials, speaking for myself, I can say - I have been wrong at times. Or at least I should see the other position. It’s not being wishy washy - it’s just that I dont’ have all the information.
I have not noticed much impassioned debate about the non essentials (when both sides agree they are non essentials.)
What would you consider a non essential?