bad,naive linguistics

I would like to know how much of the actual speech of citizens of the USA is derived from advertising, marketing, and all that bullshit.

Among the members of my family, there seems to be a stubborn adherence to marketing categories.
A certain food is "artisanal" ( )-:  )  because that's what it says on the package.  A car is "medium sized" (even if a monstrosity_)because that's what the manufacturer says.

The principle applies in the political realm as well.......