While I agree that immaculate attention to detail is important in documents you're creating for formal consumption (e.g. CVs/resumes), I don't see how the same extends to emails, websites and READMEs.

I'm a native English speaker and despite being well aware of homonym misuse, my brain doesn't always play the game and occasionally I find myself using the wrong word in my writing with no rational explanation.

Similarly, I often find myself leaving out words in my writing that I don't notice are missing even after re-reading a paragraph many times. (I fall for "PARIS IN THE THE SPRING" almost every time it comes up.)

Alternatively I'll change the wording in a sentence and not notice stray words are left over in the wrong order, again even after re-reading. Usually I have to do something else and look back at what I've written to read it with "fresh eyes". I imagine dyslexic people have similar problems.

Despite these issues I've been complimented many times on the quality of my technical writing and my code, so I don't consider my natural language issues as much of a disability when it comes to programming or technical work. That is, until I encounter somebody who holds your beliefs.

It seems obvious to me that there's a vast difference between somebody writing a CV using obviously incorrect spelling or random formatting, or inconsistent capitalisation, punctuation, tenses, etc., and somebody who makes one or two typos in a blog post on their personal home page.