hmm, but like, ghost really like her, so if she wasnt did that for fujimiya, may be everything still gonna happen, has that weird dream, meet Iruko, trapped in the house,... but in another way?
As much as i want to say 'It's not the time to talk or remind yourself about whatever bullshit promises that you made about not abusing your power or some shit'.
But atp, the blame is all on Chigarashi. You're literally taking Makube saving your ass for literally granted. You would think that by now after encountering every single fucked up ghost/paranormal activity, she would not go near anywhere that kind of thing again...
The rule definitely seems like more than a personal hangup. Could have something to do with the spirit that haunts him to some extent whether conciously or unconsciously. Having such power comes at a great cost afterall.