With recent changes to Canadian legislation, there is no longer any requirement to have a terminal diagnosis, and as of March, 2023, persistent mental illness (with or without suicidal ideation) will be considered "grievous and irremediable". The wording on the Bill is rather vague in how it applies to non-residents, using the term "generally" not eligible. How that actually plays out is probably rather hard to verify.
Here's a snippet from the Government of Canada Health Ministry website:
https://www.canada.ca/en/health-canada/services/medical-assistance-dying.html
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Unless Manitoba prohibits them for some reason, if you look around there will also be private facilities that cost much, much more, but the costs are for more luxurious accommodations and lifestyle amenities. The basic medical care components are subsidized at all facilities. In the public ones you're quoting the monthly cost is for lodging and board and some other things that are considered discretionary and residents (or their family members) still have to provide their own meds, either through provincial Blue Cross or OOP.
This discussion about the realities of the costs of LTC in the US is something I've never thought of before. It's sobering to think of having to account for it in one's long-term financial planning.