I think it would be nuclear warfare. Nuclear fission is a universal development for any advanced civilization. It would be easy to construct a nuclear bomb in an advanced civilization. Once a few rogue/pariah states start making them, everyone’s screwed.
Making nukes is easy, the only reason we don’t see more nuclear states on earth is because of the international backlash. With a couple more Iran and North Korea’s we’ll likely meet the filter ourselves.
I think it’s because of Americanized potato salad. The kind with miracle whip and tons of corn syrup. I’ve had mayo based salads like this and it makes me want to puke (as an American lol)
I think this plays with the stereotype that weird eccentric middle aged people like weird/gross food. Sort of like jello salad coincidentally (search it up, it is foul).