

In fairness, the only thing many people will lack is water. It’s not an exclusive stash, but in addition to what’s in your cupboards.
You can get 10L or 25L quite cheaply. 1 should do per person, maybe with an extra for cooking. Or just grab some big bottles of water.
A hand cranked flashlight, candles and lighter are all a must anyhow, for a power cut. It might also be worth having a cheap camping stove tucked away.
Food wise. It’s just a big bag of pasta or rice, along with some cans/jars to make it pleasant to eat. Throw in some hiking snack bars and you’re sorted.
The basic rule is that you can say what you want (and people can call you what they want for it!).
It would be polite to self moderate to an extent. No point getting the instance owners in to legal hot water. That’s a massively higher bar than Reddit has set however. Chatting about and admiring Luigi is completely fine.