I think it is too id-tastic for a lot of people. I've seen comparisons to My Immortal, and they seem to be spot-on unfortunately. I think sometimes people want their canons to be less crazy than fanfic or something like that?

Also, fandom as a whole is less comfortable with ableist stuff, lack of women, etc. The MCU gets hammered over this, for example, and they do have visible minority characters that aren't just for comedic relief like the original HP books did. What worked in the early 2000s comes across as tonedeaf now.