I'm far from an expert so take what I'm saying with a grain of salt. What I've been seeing is that poisoning is becoming less and effective since all the major models have such a large reference to go by they can automatically weed out "poisoned" information.
I guess if the information was completely unique and the subject wasn't found elsewhere on the internet you might have more success, at least temporarily until more information came out.
I don't know the outputs amounts, but wine is also made in Ontario and on the east coast too. I'm not a wine drinker (or at least not enough to tell the difference between good and bad wine) but I've heard some of the wines coming out of Ontario are really good.
I found this map online which looks like it may give some more information: https://vineyards.com/wine-map/canada