I live in New England and utilize heating oil primarily. Even that won't work without electricity.
If we want to talk about power outages causing loss of life due to freezing then we can talk about that problem. But I'm pretty confident that "put today's gas furnaces in everybody's home" is the appropriate way of attacking that problem. Especially in a place like the bay area where you just aren't seeing 10 degree lows.
Recommended? Of course not. But a lot of (especially rural propane) users do it to avoid freezing pipes and people.
SF maybe not so much, but in climates where you can literally die without heat (often because you're simultaneously "snowed in"), you really really want dissimilar redundancy.
(obviously NEVER heat with a stove, because as we all know you'll burn down your house and/or asphyxiate from carbon monoxide)
Did you mean "is not". And I never suggested this. But certainly there are vulnerable populations that should be considered.
If the purpose of this legislation is to improve "indoor air quality", as another poster suggested, why not educate the populace and allow them to make the decision for themselves?