These things aren't mutually exclusive.
That said it can be incredibly hard to medicate someone in psychosis, especially if there's an aspect of paranoia.
And even then, the medications are generally only somewhat effective, which can be a world of improvement, but still leave the person in a state of psychosis.
And that leaves accommodations: in the US, it's hard to get a psychotic disorder like schizophrenia covered by disability insurance. Workplace accommodations are near impossible.
Even medical professionals can present difficulty, if they're not familiar with the implications of being in such a psychotic state.
And anything done to improve the situation can easily be misconstrued and in fact make their mental state worse.