And the ones that are older have been heavily modified. Even what we think of as old traditions are usually remarkably new in how they're done, even if the concept has been around for generations.
When people want "traditional [thing]", what they usually mean is "I want it like it was when I was a teenager".
Butter? Aren't the majority of soldiers from the "never seen a fridge" type of rural areas? They wouldn't be buying butter anyway, they'd be making it