It was a stupid throw away comment about how expensive power could become in the near future, such that popping corn becomes a 'lifestyle choice'.

Having said that, throughout the years I have made the odd comment about how fragile the grid is, and how fragile society is in its dependence upon the grid. My favourite way to demonstrate the fragility of the grid is referencing CyberSquirrel1: https://www.cybersquirrel1.com/

If small furry animals can accidentally take down segments of the grid for hours at a time, the scope for intentional (human) sabotage must be pretty darn broad. I feel like I don't want to call much attention to it because it feels like it would be both easy and effective at the same time as requiring essentially no direct violence against another human (it's just a direct violence against a community, but that's a more vague concept).

My favourite example from cybersquirrel1 was an eagle that dropped a sheep skull on <some critical part> of an electrical substation that shorted out a whole regional area for a time.