I suspect you'll find relatively few people who will use "genocide" to refer to the eradication of a culture without concurrent mass killing of the members of that culture.
They usually do, but sometimes the overt murder stops while the genocide continues. If, and this is debatable, an endpoint could be drawn for the Native Ameeican Genocide in the US, its definitely long after outright killing based on being a Native not assimilated into the White society stopped being an organized practice.
Matters very little what people like yourself who are far away from any impacts want to call it, it's still happening.
Here is an editorial from 1888 about the first Prime Minister of Canada and his starvation of indigenous, doesn't necessarily seem to me that everyone was on board with the treatment back in 1888.[1]
https://commons.wikimedia.org/wiki/File:1888_Editorial_carto...
Also a better chance of what succeeding? Do you know the history of Canada? The displacement of indigenous was the point of the policies.