>That would be dangerous for many rural areas.

Not at all, I live in a rural area.

>For some remote regions, blizzards taking out the electrical grid is a real concern.

Effectively every fossil fuel powered heater being installed requires electricity for the fans to work.

>You need a local mechanism to generate heat and an on-site propane/oil tank is the only realistic option.

A backup generator that runs on propane. You'd need a backup generator to begin with even for propane heating, so just go full electric with a heat pump.