Not in any simplistic literalist way. It's subtle. That's the problem. Spirit moves beyond human understanding. You can't fit God into a book. Christ came AS God. As THE Son of God. You don't have to like it. Argue the fine issues but that is what Christians believe.
It is what trinitarians believe, perhaps.
I don't think @mee from that old thread would have agreed.
You emphasise that "Christ came as God", and ignore the Father? Did Jesus ignore the Father?
..but wait .. you think that Jesus IS Jehovah .. but you don't like talking about Jehovah .. you want to talk about Jesus?!?
Why would that be?
Your argument contains a fatal flaw that you insist the Qur'an to be correct on all matters, and so where it disagrees, others must be wrong: trinitarian Christianity must be wrong. It condemns trinitarians to hell.
It's not my fault that I have to decide. They can't BOTH be right. Either the trinity is a correct philosophical concept .. or it isn't.
If you want to go along with a mysterious, gnostic interpretation like Philo did, it's up to you
God speaks to the individual heart and soul and spirit. God is there for anyone of any or of no religion -- any place, any time in history.
Indeed, God guides whomsoever He wills. However, many religions aren't concerned with Jesus / Jehovah.