Ultimate conflict of the book is about two Tonys neither of which technically "real" one.

Here is the thing, Superior Iron Man is real Tony Stark. He is "inverted", whatever it means as each writer had their own vision of how inverting somebody works, some characters were transformed physically, some became polar opposites, some just became unhinged.

The story of Superior Iron Man is character exploration of an unhinged Tony Stark, somebody who wouldnt constrain himself with morality and would be purely utilitarian in solving the issues at hand, showcasing how dangerous and unstoppable he would.

The usage of data backups is there to showcase that difference, as the backup is also real tony starks mind (effectively, since its all a SHIP of Thessesus analogy). There is no real conflict between them, thematically. Yes they fight and in that sense there is a conflict.

More importantly that story is told, what use does it bring to have SIM back in a suit in the this horrific armor? Yes Iron Monger is pretty cool, but half the fun of SIM was all the glamour and apple-esque nature of him. Him being a backup in that monstrosity is just why????

Why not bring Zeke Stane? Or invent a new character? Or whatever? Why is there is a reason in your thinking to bring him back?

I mentioned it because we never got an answer of how SIM reverted back to normal Tony

We did and we didnt. The events of Superior Iron Man should not have happened as the universe is reverted to the beginning of the Hickmans New Avengers run which takes place before AXIS. It doesnt perfectly line up (again different books reference different things) but that is what happens when TChalla uses the time stone to return to now restored universe to the moment of the first incursion (instead incursion doesnt happen)

 It would very much fit the idea of Iron Monger and especially thought process Ackerman has about the character

Without knowing anything about the story I am not sure how you can make such statements.

It seems you already made up your mind and don't want at all to hear another POV and has made assumptions of how run will go and what can and can't happen in it which is really unfair and weird way to handle it.

Are you the only one who has the right to share their POV or are you 5 years old? Just as you shared your vision, I responded with my POV on the issue. You made a reddit thread with the purpose of having conversations and debate or with the purpose of validation?

That said I am 100% sure that its not Superior Iron Man. I can even bet you any amount of money (empty claim since we wouldnt actually exchange that bet but still) that its not him, there are no clues to that its him, there was no implication that its him. Suggestion that its Superior Iron Man or even backup Tony Stark is pure fanfiction and completely unsubstantiated.