According to research, DID must form through childhood trauma sustained before the age of 12, (or 16 in people with ADHD) and cannot be formed without that trauma. Before I knew about the plural community, I knew about peer reviewed research papers, so that's what a lot of my knowledge is based on. As there is no room (that I can see) to doubt these studies, I'm incredibly confused about endogenic systems. I hold the opinion that endogenics are either traumagenic systems with amnesia too severe to remember their trauma, or faking the disorder. This opinion feels flawed, as a demographic this large cannot all be both malicious enough to fake and good enough actors to do so convincingly. As I am not a system, nor do I have any endogenic friends, I'm asking you what you think on the subject.
You are 100% correct! The general consensus in psychology is that, yes, CDD's (complex dissociative disorders, e.g. DID/OSDD/UDD) are trauma-based disorders, and need trauma to form. Though, this does not immediately turn down the existence of non-disordered plurality, since, in the name, it has nothing to do with CDD's and that experience of plurality! The only common thread is the plurality itself! Psychology doesn't exist to disprove things; it exists to make solutions and therapies and research into phenomenon that happen within the brain. That is why the FMS Foundation is generally considered non-psychological, they are attempting to prove a negative and are additionally going about it in a dangerous way.
Endogenic plurals don't claim to have CDDs, and if they do, they are either misinformed or trolls trying to tick you off. Most endogenic plurals you will meet will never claim to have a CDD if they don't have one diagnosed.
And I agree with you when you say, "This opinion feels flawed, as a demographic this large cannot all be both malicious enough to fake and good enough actors to do so convincingly." This is what we mean when we say if there is a large community of relatively separate people experiencing the same/similar thing, it's probably a real thing that happens!
A place with some further reading to do on endogenic systems and their existence is Rainbow's Resource Hub on Discord! (link provided). Just go into the research tab and mark that you want posts tagged with "Endogenic" and there are quite a few in there!!
Thank you so much for sending in the ask!!
and apologies for the wall of text :c