For example:
"You did bleach ten gallons of well water for long-term storage already earlier in the year, right? Good."
This is sarcasm, because the author did not do that.
There is some truth in it [that doesn't translate well over to some other part of the works]. It requires rather poor infrastructure to be present.
There has been snow for over 2 months here, with relatively low lows (-29C) but no issue like lack of electricity or water.
For our new home we're making we have two toilets (always practical). One of them is tankless, but we made sure the second one is a traditional cistern toilet with no electrical requirements. Just in case.
In the USA most residential toilets are tank type and don’t directly use electricity.
(And yes - I, too, learned that the hard way.)