While I generally agree with the point you're trying to make, the paragraph I've quoted makes little to no sense at all. I realize you stated you had a limited understanding, but I'm afraid that this paragraph shows no understanding at all.
Files do not become corrupted simply from not being "closed properly".
Hard resets do not cause file corruptions unless the files were in the middle of being written. In this case, virtually any device with a file structure can be damaged by a hard shutdown.
A fresh windows install does not remedy corrupted files, it remedies the muddy registry that results from the "click or download anything syndrome" that you mentioned

Since windows 95, all windows operating systems terminate active programs before shutting down, just like you stated that OSx does.
Applications running at shutdown have nothing to do with fragmentation.
Hope that clears things up a bit, and hope it didn't come across as rude. Just trying to clear up the false claims