Actually, the article is about using that same image compression format to compress web pages (text and HTML) instead, which sometimes works even better than GZIP. Brotli still wins for most cases, though.
It's a confusing title, though. I thought what you did at first, too.
Well if that's your criticism then I don't know why you linked the wikipedia page for WebP. The article explains the image format, so that link comes across as a mistaken reaction to the title.
Also I disagree that it really gives "another meaning".
