I never stated nor implied that spelling and grammar are a marker of intelligence - just a marker of being able to retain and use simple information. This was absolutely directed towards neurotypical people, and I probably should have mentioned dyslexia as an example of where this logic doesn’t follow.

It needs to be used to discriminate in fields that require abundantly clear communication urgently. I’m a child protection caseworker who does nothing but write up reports all day; if I had dyslexia I’d need serious accommodations to be able to perform the role at the level expected by the taxpayer who pays my salary. It absolutely can be done, but they’d likely need to hire a whole other person just to scribe. Have a look through my comment history; I’m well aware of dyslexia and its effects as I used to scribe for a friend in uni.