With English, opinions matter.
French has an authority, the Academy, to arbitrate what is proper or improper French.
In English, we have conventions from editors, authors, grammarians, and from everyday speakers. We all get an opinion, and there are more than a few ways to have your opinion be the "right" one, the one with which everyone else agrees:
1) Agree with the opinion of one or more of the published authorities on the subject.
2) Get someone else to mark you as an expert grammarian. (This is normally done by consistently using strategy number 1 for an extended period of time.)
3) Be loud, pushy, rude and critical of those who disagree with you. Try to call their opinions ignorant.
4) Cook up a psuedo-linguistic rationalization for your error. (This one is more common than you might think.)
5) Convince your friends and neighbors to adopt your "innovation." (e.g. new verb: to conversate; from conversation; from converse)