Again, it depends on whether or not the individual is mentally competent. If the deeply erroneous world model is borne out of hallucinations of bugs coming out of the walls to eat you, then no, it is not unethical to prevent this individual’s suicide and correct the model with the appropriate therapy and anti-psychotics. If the deeply erroneous world model is held by a mentally competent individual who believes something false (such as a false diagnosis of dementia, for instance), then it is not unethical to correct this model by convincing the individual that the distressing belief is false, though it is unethical to use force to do so.
Again, it depends on whether or not the individual is mentally competent. If the deeply erroneous world model is borne out of hallucinations of bugs coming out of the walls to eat you, then no, it is not unethical to prevent this individual’s suicide and correct the model with the appropriate therapy and anti-psychotics. If the deeply erroneous world model is held by a mentally competent individual who believes something false (such as a false diagnosis of dementia, for instance), then it is not unethical to correct this model by convincing the individual that the distressing belief is false, though it is unethical to use force to do so.