You obviously didn't make it to the end of the article, where it's explained that numerous Francophones wrote into dispute the author's interpretation and the author admitted his understanding of French was fundamentally flawed. As a French-speaker myself, encountering obvious bullshit at the beginning of the article made it difficult to uncritically accept his assertions for the remaining pages.
That note at the end also made it clear that the mistakes were corrected. Did you read the first part, get upset, then reload and read the note at the end?