Your title says the opposite of the results and your own text body. If 1 in 5 were in favour of maintaining or expanding the CBC's budget, that would mean 4 in 5 aren't.

That said, I'm sceptical of any survey paid for by an advocacy group that gets the exact results said advocacy group would be looking for. They've also combined Radio-Canada and CBC. I'm not a fan of that because Radio-Canada is far more relevant to French Canadians than CBC is to English Canadians. The two might share a budget, but otherwise, they're completely separate. Given the survey was able to break down responses from Bloc voters, my guess is that a not unsubstantial amount of respondents were from Quebec. Skimming through the report itself, I don't see any provincial breakdown.

Some of the questions also seem to be lacking context. There's a part where the majority of those surveyed agreed that OTT platforms should be forced to pay into the same programs and initiatives that the incumbents do. Would there be the same amount of support for that if the respondents were told it would likely result in higher bills for them? I suspect not.

I also find the idea of the government threatening syndicators for "fake news" very Orwellian. You know that will only further encourage established media empires.