Don't try to Psychoanalyze Ghosters.
Reading through a great many of the posts on this sub and having been a victim of ghosters multiple times myself over the years, the advice and conclusion for people here is that we should overall stop trying to understand why these people do what they do even if the search for some comforting, endgame truth can be weirdly addictive --- but spending months, sometimes even years reflecting, musing, reopening wounds and vivisecting the miniscule motivations, both real and imagined, as to why they go no contact on us is generally a waste of time because there is often no clear cut answer. And even if there is some greater, deeper revelation as to a ghoster's mysterious reasoning, what they've done by default overshadows whatever philosophical argument or closure could ever be given on the matter seeing as how what they've done is ultimately who they are. At least where we are concerned.
Do not view them as this complex creature or a puzzle to be solved.
You're in a way giving a mystique and power to people who absolutely do not deserve it.
-- Basically, this serves as a memo to myself and everyone else to break the cycle of trying to understand and act like a private investigator towards individuals who willing made themselves a non-entity in your life. They've placed themselves in the non-entity box and let them stay there. That is all you need to know about them.