no you are not wrong. it is for this reason that here in america treatment providers are not allowed to "call out" an alter directly. and can not focus treatment directly on any .....one..... alter. here treatment focuses on stabilization, grounding, working together, developing communication,...
things that will not promote another mental disorder called fictitious disorder imposed on self (some locations call this false memory syndrome, creating false alters for attention of others or their treatment provider.

that said sometimes a person needs to be separated from their alters. thats the premise of what DID is.... and the reason extremely abused at a young aged child was able to survive \live to become that adult in treatment.

DID is a mental disorder where the brain through the use of dissociation has put up mental walls to separate those memories, emotions of trauma that the very young child was unable to handle. those parts of the very young child function completely separate from the child, they have their own way of being, their own jobs, purposes, reasons for being.

then over time of healing when the child becomes an adult and through their own healing process ( either by their self or with a treatment provider )is better able to handle things on their own, information, memories, emotions are shared (co consciousness)

or in limited co consciousness situations where co consciousness does not develop very much (like what happened with me) the separation between the alters and between the alters and those they reside with in stops and all become one whole person again due to the alters jobs, purposes, reasons for being is no longer there.

my point is the separation is already there. my location doesnt .....encourage .....it, but its recognized as already being there and is just part of what the disorder is.