Those toggles don’t work because, in Canada, everything is sent at the Presidential Level, which might be above “Extreme Alerts”.
I had to basically plug my phone into my computer to access adb (a command line tool) to deactivate them.
On my old phone, I was able to make the sound at least respect DND. I don’t know if it’s a Samsung vs. Google thing, or if it’s an Android version thing.
Canada ignores complaints because if people got the alert, it’s working.
Android ignores complaints because it’s Canada’s problem, and why would anyone want to completely deactivate all alerts? (Which I’ve done – I don’t even get texts anymore, which I actually want. But it was all or nothing.)