(not trying to put you on blast specifically, you're just a good example to jump off of)
media and pop culture hypes up psychosis a lot as The Worst That Can Happen out of sanism, so even when you try and filter that cultural bias out you still assume it's based on something
when, no, psychosis is actually very simple: it's just hyperactive pattern matching. it's your brain's signal-to-noise ratio being off balance, it's seeing images in random static. it's not always this special uniquely big thing, it's in fact quite mundane a lot of the time.
no one is immune to psychosis, it's not purely the realm of the insane. anyone is one bad night of sleep or one bad case of food poisoning or one bad fever away from being just like me on my worst days.
and this, indeed, is why solidarity with the insane is so important: you, yes you too, are just one bad day from joining us, and no perceptions of being a "temporarily embarrassed sane person" will save you from the oppression of the psychiatric institution.