Comment by AHOHA

You are discriminating against the candidates who might have some disabilities (whether they know they have or not) like dyslexia, you are also discriminating against candidates whose English (or whatever that language in your country) isn’t their first, even though they might be the best suited candidates, best programmers/engineers/etc., I have seen this first hand in some interviews, where some candidates eliminated from the first round by hiring managers because of similar issues or even silly ones like having an accent, after I -as the technical interviewer- gave the green light thay they are qualified for the second one.