Re: Accident waiting to happen.
I recommend actually trying the feature before commenting that everything is wrong and the sky is falling in.
Google Drive documents are not *completely* indistinguishable, at all. They exist in their own section in the Nautilus side bar, so you have to specifically click on that location first before you can interact with the files. However, when you do start interacting with files, they do act in a native way. That is, clicking a .ods file will load LibreOffice Calc - as you would expect. It is this to which the author was referring, not some kind of wishy-washy feature whereby you don't know where you documents are stored.