1. He almost never acts psychotic on the forum, unlike say, Dima79. Even tryp and cs act crazy when they're not in chat.
2. As bitchy as he is, he has decent social skills, something that most people with schizophrenia seriously struggle with. He's able to make friends and meaningful relationships.
3. He has hypochondria, giving himself labels that benefit himself. Another example of this is how he is a trans-woman despite not having dysphoria, or trying to look feminine. And he loves giving himself diagnoses, to validate himself. He is completely capable of writing paragraphs of posts, but he is too lazy to get a job, and uses schizophrenia as an excuse. He is irrational because of his emotions (laziness, wanting to feel special, low self esteem at being a failure), rather than being emotional because of his cognitive issues (real schizophrenia).
4. Other than that, there is little that is irrational about him. He has good memory and can make coherent arguments spanning paragraphs long. Even his suicide attempts are well thought out. Once, he tried starving himself to death instead of doing something impulsive.