That definition would make sense only if there was a way to explicitly tell that you request ads or promoted content of some sort, most of the time you don't, y

That definition would make sense only if there was a way to explicitly tell that you request ads or promoted content of some sort, most of the time you don't, you type a search query in Google's text box or click on a link to some web page, that's all. The extra content gets bundled and is loaded without asking.