Thing is you have no conclusive evidence for this, and Jesus even said that He must be lifted up like a snake on a pole, and we can read that Nehushtan was "broken up" because it was being worshipped as an idol.
So the symbology is all in place to understand Christ as Spirit, yet we have most or at least many professed Christians who even teach that belief in "Jesus" is all one needs. So there is already a tension there that imo your assertion of "no physical Jesus" just ends up obscuring.
A counterfeit worship of Jesus is already there, and quite functional iow, so why alienate yourself asserting something that people will just misconstrue and dismiss you for?
"Nehushtan" or the "serpent on the pole" is still worshipped as an idol today and always will be as long as people believe in mythical gods. The name of the "serpent" has just changed to Jesus. Look at how many Christian religions have made a graven image of the man on the cross and even pray to that image.
Who or what is going to destroy the idol if not the LIGHT of TRUTH?
It is ironic that the serpent on the pole symbolises Jesus and professing Christians who continue to live in sin claim that all they need is to believe in that serpent on the pole to be saved from sin.
It is no different to believing the serpent in the tree who also told Eve that she would not surely die.(Gen 3:4) Jesus said the same thing as a serpent on a pole...You will never die. (John 11:26)
The blind cannot see that both these characters were telling the truth in a spiritual sense when referring to spiritual death to death even if both were lying in a physical sense when referring to physical death because all believers in the serpent or Jesus have always physically died and always will.
Whether people alienate themselves from others or not depends on whether people consider and accept what each other say or not. It is no different from the Jesus character alienating himself from many people. Did he do that on purpose or was the so called alienation due to the way they interpreted or misinterpret his words?
The important thing is not to worry about whether we are accepted or rejected by people or what they think of us. Speaking the Truth is what is necessary and the Truth always alienates itself from lies and liars simply because that is its nature.
There simply is no fellowship between Truth and lies or Light and darkness. Light alienates itself from darkness at all times too due to its nature.
Darkness will always misconstrue Light. (John 1:5)
When you understand and accept that fact, you also accept the fact that those who walk in darkness will always be alienated by those who walk in the Light simply because it is the nature of Light to destroy darkness.
Too many people spend too much time trying hard to be accepted and trying hard to not offend others instead of simply speaking Truth.
Light does not strive to be accepted by darkness, nor does it try hard to say or do things in a way that darkness can comprehend. It understands that darkness will never comprehend Light.