You're right, we likely won't convince each other of the other's view point, so not much point labouring over it in regards to Canada's actions explicitly.
That said, back to the core point, I don't think anything you've said changes my position that equating these two things cheapens the word Genocide.
To take a similar situation to clarify: Rape. Go back a decade or two, and Rape brought forward images of like, a guy hiding in a dark parking lot at night, jumping out and violently forcing himself on a woman. Or cases where the rapist broke into a single woman's home and assaulted her. Now, in Canada for example, when a woman has an orgy with 5 guys, is recorded saying shit like "Get over here and fuck me you pussy", and later decides she didn't want to do that... it's called rape. Or the Harvey situation, where women consenting to sex in exchange for power/privilege, is called rape. Advocacy groups make claims like over 50% of women have been raped, with the 'broader' understanding of the word. Even if some legal gits have structured arguments and bullshit so that the term 'technically' fits in the broader sense, people care a lot less now when someone like Trump is called a Rapist -- the words been diluted to a point where its lost its power. If everyone's a rapist, why be morally outraged?
Calling Canada's actions over the course of more than a century a genocide does the same thing. Calling Canada's actions a genocide, while dithering on whether Israel's actions count, makes the term genocide far less impactful.
Eh, online polls, with practically no respondents from one of the most important demographics (only 47 FN in the mix), are pretty lackluster / non-news. Part that seems worthwhile in the article is the note that better surveys should be done. Seeing the article on a FN news site, I'm surprised they didn't attempt to poll their readership to get another data point.
Also, francophones being more positive on this front wouldnt be a huge surprise. The rhetoric / angst for the history is largely aimed at anglo colonials -- and it's such that it targets all english speaking white people, regardless of whether their families were around during the period or not. The french are likely more prone to absolve themselves of guilt, because "we were oppressed by those anglos too!". Kinda like how none of the asian/middle eastern/african immigrants I know, think any of this stuff applies to them / is a dig at them. When non-Caucasian Immigrants see anti-colonial graffiti scrawled all over an alley, they don't generally seem to take that as a demand being made of them.