There’s quite a number of HPMOR readers who’ve never read HP. Admittedly this may be a special case, and it’s not HPMOR’s original intended optimal use-case either (reading Philosopher’s Stone first is a good idea if you can).
I was a lifelong HP fan before reading HPMOR—and I would almost certainly never have read it if it wasn’t HP fanfiction. (Or popular on TVtropes, but that’s another matter.)
There’s quite a number of HPMOR readers who’ve never read HP. Admittedly this may be a special case, and it’s not HPMOR’s original intended optimal use-case either (reading Philosopher’s Stone first is a good idea if you can).
I tried the original after HPMOR, and it reads like mediocre fanfic :) Harry is just all wrong...
I was a lifelong HP fan before reading HPMOR—and I would almost certainly never have read it if it wasn’t HP fanfiction. (Or popular on TVtropes, but that’s another matter.)
I only decided to watch the movies after I read an early version of HPMOR.