No, but skimming it the content seems common-sensical enough. It doesn't dissolve the correlation with "generally being harmful".
It's not a "fits the criteria of a psychological disease, case closed" kind of thing, but pattern matching to schizophrenia certainly seems to be evidence of being potentially harmful more than not, don't you agree?
Similar to if I sent you a "P=NP proof" titled document atrociously typeset in MS Word, you could use pattern matching to suspect there's something other than a valid P=NP proof contained even without seeing the actual contents of that specific proof.
I agree it's sensible to be somewhat wary of inducing hallucinations, but you're talking with a level of confidence in the hypothesis that it will in fact harm you to induce hallucinations in this particular way that I don't think is merited by what you know about tulpas. Do you have an actual causal model that describes how this harm might come about?
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.