First off, I'm no clinician, but it's obvious to me he displays behavior
consistent with dyslexia- the instances of this are too numerous to mention/link. But consider his infamous, “You will never be as
perfect as [CWC].” It seems to me like he saw that there was a “p, e, c,” and a “t,” correlated that with the word length, and guesstimated the word to be “perfect.” In those sections of video where he reads from the Bible, pay attention and I think you'll agree he infers what words are from the first couple of letters and the context. (Also think of the time he spelled, “sellulitus” <sic> while staring
right at the word)
I'd like to point out that
none of this has anything to do with intelligence. I've got (dyslexic) friends that probably couldn't spell "neighbor" correctly, and they're
far from stupid. They, and he, have trouble reading words, and AFAIK there isn't really much they can do about it, except come up with workarounds. Like say, listening to audio books instead, or
inferring what a word is, from its context, and the first 1-3 letters.
You can hear how agonizing it is for him, the reading... Ever see his bible, with all those highlighted passages? Likely a reading aid- sometimes word/sentences/lines “drop” on the page for dyslexics, and tracing the sentence word to word, like with a finger or pencil tip, can help mitigate this problem.
No joke, I have a lot of respect for how dedicated he his to reading that Bible. I don't know that I've struggled with
anything that mentally difficult in the past year, and he's doing that shit on a daily basis. (I think reading Luke L McGee might be a good dyslexia simulator!
https://kiwifarms.net/threads/luke-ledgerd-mckee-hojuruku.18836/)
I think I can say, without malice or personal agenda, that Robert L. McKim doesn't live in the most cosmopolitan/intellectual part of the USA, and we've made a lot of social progress since the era in which he was raised. This is to say, I find it unlikely that his learning disability was recognized by his teachers and family, as a biological anomaly in his brain. Considering how quick he is to mention
every other problem he's been diagnosed with, I feel this is a solid assumption.
In fact, I think we can safely assume that people have been calling Robert L. McKim stupid and/or lazy, for his entire life: it's been his family, his friends and acquaintances, pretty much everybody that knows him, and interacts with him, and
quite possibly his teachers growing up too . A lot of kids with cognitive disorders get told they're lazy and stupid, by people that don't know any better, or total fucking assholes that like bullying kids.