Please state in which country your phrase tends to be used, what the phrase is, and what it should be.
Example:
In America, recently came across “back-petal”, instead of back-pedal. Also, still hearing “for all intensive purposes” instead of “for all intents and purposes”.
Yeah, words aren’t determined by dictionary committees or English teachers. They are determined by people using and understanding them.
All languages (other than ones designed deliberately, like Esperanto, Klingon, and Tolkien’s elvish) started from the same root and diverged when populations reduced regular contact and all words and grammars were made up along the way.