Yes I have heard several independent sources (all personal anecdotes only) that many teens/young adults are not framiliar with basic computing tasks such as navigating the file system. Because their experience has primarily been this kind of mobile-first "cloud" stuff. Design is streamlined enough that you don't need to know where your file resides. It is all hidden from the user.

I can understand why schools distribute chromebooks but it is a terrible disservice to the students to allow such a limited experience of computers to pervade.