Or, to look at it another way, perhaps it's the usage mavens who are wrong. We don't all have to be Humpty Dumpty, but if the vast majority of people choose to use a word, a phrase or even an entire language in a way that overturns precedent you eventually have to bend to their will or be broken by it. This isn't an example like misnegation where you can argue that perhaps someone didn't mean what they wrote, the author intended exactly these words, they just didn't intend it to mean quite what it once did.
Even eggcorns, which begin with a mistaken re-analysis of a spoken word or phrase, sometimes enter the mainstream. Once upon a time "upmost" was clearly sometimes a mistake for "utmost" today it's unclear, in another century there may be usage mavens insisting "upmost" should be preferred as more logical and "down the pipe" might likewise displace "down the pike".