Waste of time because the "tulpa" - your hallucination - has access to the same data repository you use, and doesn't run on a different frontal cortex.
This also sounds like an argument against IFS. I don't think it holds water. Accessing the same data as you do but using a different algorithm to process it seems valuable. (This is under the assumption that tulpas work at all.)
The benefits from analytically shifting your point of view, or from using different approaches in different situations certainly don't necessitate actually hallucinating people talking to you. (Hint: Only the latter finds its way to being a symptom for various psych disorders.)
"You need to hallucinate voices / people to get the benefit of viewing a situation from different angles" is not an accurate inference from my argument, nor a fair description of IFS, which as far as I know doesn't include sensory hallucinations.
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.