As a notoriously bad speller who, at least in his defense, is trying to improve, I feel obliged to point out that the example referenced was a spelling error, and not one of misuse, as the two words in question “pour” and “poor” are homophones and sound identical in spoken language.
Speaking of spelling errors, let me just correct one that I just made - mis-spelling “pore” as “pour”.
The media will accuse Trump of blatant homophomia.