> The backup generator that needs periodic testing and maintenance whether you use it or not, and accommodations to store fuel safely if you want to be in full prep mode?

Yep.

> If the electrical grid fails to the point that you're days or weeks without power, having your food unfrozen is going to be the least of your problems.

Happens several times a decade on the Atlantic coast of the US. Well, the days do, at least. Weeks, probably not.