Abrasive instrument, or face loofah?

I just unearthed this article with advice for coping with beard burn.  They advise moisturizing and close-crop shaving for prevention, and antibiotic ointment for after-the-face cases.  Are there documented cases of beard burn, or any substantiation to the allegation that a low-growth beards have the texture and strength of copper wire?  I think not.  In advocacy of beards, and in the spirit of constructing facts, I will now rebrand the beard as a FaceLoofah.  Exfoliate away.