I wouldn't quite put matzah in the same boat as "food that came out of hardship", as the exodus is a founding myth & even if partially based on true events thes

I wouldn't quite put matzah in the same boat as "food that came out of hardship", as the exodus is a founding myth & even if partially based on true events these events happened about 3500 years ago. Furthermore Jews today don't consider it as a tragedy (unlike e.g. the more recent and much more historical events commemorated by Tisha B'av).