As far as I can tell, he doesn't even believe that Jesus is God's only begotten Son. We might as well be debating with an atheist. It would take a month of Sundays to disabuse him of all his errors and delusions. I just don't have that kinda time, especially now. Do you?
The fact that he rejects the Apostles' Creed (or at least the bulk of it) alone speaks for itself. It's just about the most widely accepted statement of faith, so his rejection thereof is proof that he preaches 'another gospel', if any further proof were needed.
Speaking for myself, I twigged that much long ago, & I suspect every other true believer has too.
In that case, by definition, he is either a polytheist, or else Jesus is not the Father's equal. Or both. There is no other possible explanation. If memory serves, I believe he harbours some latent Mormonite beliefs, which now makes perfect sense. After all, we are all gods, are we not?
Dunno about you, but as I understand it, denial of Jesus' unique eternally begotten Sonship of the Father is tantamount to rejection of foundational truth. It simply isn't possible to believe that and be saved.
'If ye believe not that I AM he, ye shall die in your sins'.
I'm sure he once said he has no problems with that statement. Either he doesn't understand it, or else it has a problem with him. Or both.
Why not just come straight out and tell us all how many equals Jesus has, since he isn't the only begotten Son of God? Afraid to show your hand? Afraid to condemn yourself out of your own mouth?
Then be our guest. How many? And when did he come into existence? You surely cannot believe in His eternal pre-existence, for then He would have to be God, the Father's equal. But you cannot possibly believe that, coz that's already 2/3 towards a triune God, which by your own admission is anathema to you.
So go ahead, the floor is yours. Answer the questions put to you, or else desist from promoting your infernal doctrines from hell.