Random 'Attachments' folder appeared in OneDrive for Business

I'm trying to create a OneDrive training for my entire business function and I am going to have to say "Microsoft is being a pain" in order to explain why some or all of us have BOTH "Attachment" and "Email Attachment" folders not to mention a "Documents" folder, all of which are:

1) unexplained

2) un-killable zombies that arise from the grave every time you shoot them, if you try to delete

Most of us non-programmers (and we are legion) do not have the chops to hide these folders, nor to intuit a specialized relationship between these folders and any other apps we use. 

If you even try to tell one of my colleagues that there's a OneDrive FOR BUSINESS vs. another flavor you will get a thousand-yard stare and/or instant recoil.

And I train people starting WEDNESDAY. And my best option will be to tell people to ignore these folders that are cluttering up this tool and confusing the hell out of them.

So yeah, am I going to say "Microsoft is being a pain"?

As we say in Midwest U.S.... you betcha.