Go ahead then... Name the medical professionals to whom you refer...
See, I have no problem naming medical professionals who have either acknowledged the existence of plurality outside of dissociative disorders or at least acknowledged it as a possibility that would warrant further research. Eric Yarbrough, Colin Ross, Samuel Veissier, Michael Lifshitz, Richard Kluft, Ellert Nijenhuis.
These are just names off the top of my head.
So it shouldn't be hard for you to be able to cite a single doctor who has said that you need trauma and a dissociative disorder to be plural. One doctor somewhere who has definitively said that the experience of being multiple in one body is something that only exists in dissociative disorders.
But of course, you aren't going to be able to do that are you?
I've been doing this for 4 years now and in all this time, no sysmed has actually been able to provide a source to back up this position.
The truth is that the belief the plurality is exclusive to mental disorders and trauma isn't based in science. It is not backed up by any medical professionals. If it was, sysmeds would have been able to find them by now.
Even antivaxxers have disgraced doctors they can rely on for citations. But sysmeds don't even have that.
Their ideology is built on nothing!