I think its also important to know that something can be problematic in it's roots, be "colonialist" in nature and roots AND still be critically helpful and still used, especially if it is the best thing out there at the moment.
Most things in the world that are helpful and useful have issues playing a role in systemic oppression, systemic racism, and colonialism. Unfortunately, that is just the nature of those sorts of things - they're insidious and pervasive.
The fact that they have issues and play a role in those issues does NOT mean that they are immediately and inherently "broken" to the core and that they should be entirely boycotted / ignored / disqualified or anything.
Yes there ARE some things so fundamentally built upon it that to call for "reform" or "improvement" to lessen the role and impact it plays into systemic oppression, racism, and colonialism would almost require the complete abolition of all the fundamental ideas that made it so (looking at you American Prison System and Cops); often times these things do SO much more harm than not.
However, there are some things that - while its important to acknowledge and hold some caution and distrust to due to their role in systemic oppression, racism and colonialism - help and save lives and are currently the only thing filling the niche. We are talking science, research, medicine, education, mental health, etc.
They are tools and mechanisms deeply impacted and play a role in systemic oppression, racism and colonialism; however one can call for change, awareness, and insight to help it grow away from it's designated roles without turning away from it as a whole.
The medical system is full of systemic oppression, discrimination, racism, and colonialism; but you still do need medical help, everyone does. The medical system can suck, but still be respected in the regard where it fills a necessary niche.
The relevant thing that came from this is that I stand on the ground that the Theory of Structural Dissociation is inherently colonialist in nature HOWEVER I still deeply acknowledge and appreciate the help and perspective it brings to understanding and approaching DID in a clinical perspective. I think that ToSD should STILL be used and referenced WITH the insight, awareness, and critical thinking that takes into regard the colonialist assumptions the entire theory is based on.
Again, something can be problematic in nature and be a part of the overall machine that supposed systemic oppression AND still be important and necessary to use for the time being as it fills a niche that is not really filled by another.