As other commenters have guessed: I was calling the narrative into question. Lard was once common in Europe (if not necessarily in the Nordic region) and now it isn't. Could it be that something other than this domestic narrative killed lard?

The same is true of other trends both in America and elsewhere. For example, in Norway, we perceive rural areas being abandoned in favour of urban areas as a problem to be solved. We pretend that this problem is domestic, and that we can solve it domestically, but we are actually looking at a global trend, yet no one points this out when it is discussed.

I think that 99% of the time when Europeans make what you perceive as annoying "Eurocentric" observations, they are actually calling cause and effect into question. If an effect occurs on both sides of the Atlantic, and the Americans are attributing it to domestic causes, that would seem to be the wrong conclusion, because what, then, caused it to simultaneously happen in Europe?