There was a language-peeve Op-Ed piece in the NYT yesterday called "A crescendo of errors", written by a violist who hates the expression "reach a crescendo". In music, a crescendo is a gradual increase, but it's widespread in non-musical contexts to use it to mean "reach a very loud state" or something like that. "But here’s the thing: as God — along with Bach, Beethoven and Mozart — is my witness, you cannot “reach” a crescendo." (Well, of course, as many commenters noted, you can reach a crescendo in the sense of reaching the point where it begins.)
Comments were closed before I saw the piece; it got 144 comments. Many applauded the author, but what struck me was how many didn't, and instead made the point that is so often made here, that languages change, and that peeving by "purists" won't prevent change. That seems heartening.