Ah, I missed this, I think you’re correct (upvoting you and maltrhin). I suppose that my interpretation is the one EY is trying to trick unobservant readers such as myself into making.
I do still think there’s still some wiggle room for that interpretation though: Harry’s whole outburst about Trelawney’s “He’s coming!” prophecy, where he said it couldn’t possibly be about him because he’s already arrived, would seem to indicate that EY is willing to use prophecies whose proper interpretation is not-quite-literal.
Morfin is a Riddle family name, so we can probably rule out Eliezer choosing it for its anagrams. Nevertheless, might as well have some fun:
Tom Morfin Riddle
Mini from toddler
Firm doom tendril
Mind meld for riot
Mind for time lord
Dirt mod of Merlin
MOR died from lint
Mr. Flirted in Doom
What else?