This is honestly not really that silly of a perspective if you spend anytime outside of the US, especially non-Western countries. In Japan, for example, kids are forced to drink milk in school, many hate it, and it’s something almost no one drinks as an adult. Excluding butter’s use in foods (which is likewise an imported thing and has no corollary in traditional Japanese cuisine), dairy consumption is quite low. It even used to be a common insult, pre-WWII, to refer to someone who seemed overly Westernized as “stinking of butter.”
"In Japan, for example, kids are forced to drink milk in school, many hate it, and it’s something almost no one drinks as an adult"
I don't think it would be obviously wrong to characterize the US like that. Certainly I remember milk being a standard thing kind of pushed on you with school lunches, and I think I've heard that it has to do with the government wanting to support dairy farmers - but I think they say it's to ensure enough calcium or whatever.
There are millions of people in the US who are lactose intolerant, I'm sure, as well. I would say it's rare enough to see an adult drinking milk that I can't recall the last time.
Japanese references to "butter" aren't necessarily that negative - I remember reading somewhere that the first generation Acura TL was deliberately made to appeal more to the American market than previous models and someone referred to that with a metaphor of adding more butter or something along those lines.
