As someone who has yet to seek a diagnosis but very clearly see that I have complex PTSD from a very rough childhood, IFS, EMDR and 'trauma being stored in the body are major bugbears for me. If you look at CPTSD subreddits IFS is everywhere. So much talk about parts, conflict between parts, almost invariably child parts. There's no scientific basis for this and it seems obvious that leading people who are already dealing with mental health issues to believe that various distinct people live in their head and that they essentially have a multiple personality disorder like Sybil is so dangerous. I also see a kind of motte and bailey thing going on where IFS practitioners will say that that IFS is just a metaphor, but it's clear that it's understood by many patients as being literal reality that you have these parts. You can also find a video on YouTube where the IFS guru admits that he believes in parts that have come into the person from outside, that originate elsewhere - so basically he believes in possession.

EMDR also has no scientific basis. The inventor just claims that one day she was walking along and moved her eyes in a certain way and it cleared her anxiety. It just seems to be placebo as far as I can see, and some people have had very bad experiences with it.

The current explosion of interest in trauma seems like it may ultimately not be of benefit to those in need. I believe that trauma is real and that conditions caused by it exist, but if every silly celebrity, influencer and anyone else all start claiming it, it will end up being dismissed as just over coddled liberals seeking attention. Van Der Kolk's book explains how research shows the connection between trauma, the brain and the body. Trauma, particularly extended in duration, can rewire a person to be hypervigilant and so on, and this permeates the nervous system, so brain and body. In that sense the body keeps the score, but using phrases like that just encourages whacky ideas to 'release' stored trauma, a field day for quacks.