This is a very interesting story. At first glance, I wondered why this was only being spoken of in terms of mental illness (far too often kink is deemed mental illness), but then I remembered that the patient himself sought out medical help, so that framing seemed reasonable.
In one of my two brief stints as a phone sex operator, I had a call from a client who wanted me to be a giant (not that unusual in the fetish world) who would grab miniature him in my fingers, crush him some and then eat him. This was a challenge for me to convey in fantasy, but I think I did a pretty good job. The call lasted a fair time.
I hadn’t ever encountered this idea of vorarephilia before, and as the article notes, was only familiar with cases of individuals wanting to eat other people. That German case is well-documented and was even the theme for an edition of Sex City a long time ago.