Oh no, absolutely not! I certainly didn't say that.
Simply put, the issue you're addressing isn't necessary. We're well represented. The New Brunswick Southwest poster works very well for us. There's no confusion when you hear the Speaker of the House of Commons.
However, the vast majority of voters in that riding don't care when they hear “St. Croix”. This isn't a place that affects the vast majority. I can safely say that with “New Brunswick Southwest”, they feel well represented.
This is a big debate in New Brunswick. Yes, the province is bilingual—that's not even up for debate—but being bilingual means that, back home, you can speak English or French.