I think it has spilled into the rest of Canada too. I just spent a week in Alberta and every little thing that said "stop" also said "arrêt". But the only obvious French speakers I encountered were either tourists or government officials being intentionally accommodating.
On a more serious note I think Canadian bilingualism might exaggerate this effect. Every sign and product package is printed in both languages so in a way or makes sense to spell things out in full English and full French. i.e. It would be kinda weird to print English alongside some kind of nonstandard Franglish.