Most people think in their first language. Someone that’s not a professional translator easily falls into the “translating word for word trap” similar to some online translating programs. Others who were raised speaking English mimic what they hear from friends and family. It’s not easy for someone to change if most of their peers are making the same mistakes.
I can’t remember which Yiddish/English expression became accepted as proper English by the simple virtue of being spoken a lot. Perhaps someone can help me out, it may have been discussed in the CR.