You don't need to justify why it's okay to talk about a real human being like a cartoon character.Mental health issues and general douchebaggery and sexism can coexist. And that's who Noah was/is. He needs to seek proper help and accept those help which he pretty much never does, but also learn to be a better person.
Like, being a better person by the standards of Dark_Castle on resetera probably isn't something that should be a priority during your mental health crisis.
Maybe harping on the moral character of actual real life human beings that tangibly exist and have complex inner working lives beyond what they share on the internet while they suffer from their own brains working against them is, in fact, purity testing.