Perhaps it's most fair to say that the example cheats a bit with its word selection, and it doesn't make the point it thinks it makes about spelling. Word recognition is an interesting process. There's a lot going on, from shape recognition to outright guessing based on position in the sentence. The linked-to article shows how this would cause way more problems in highly inflected languages instead of order-dependent languages like English.
There's a lot of redundancy in human language, which is a good thing.