I'm going to have say - based on my own experiences and the majority of the 回答 here - that it's just you.
link it's the people who picked Hermione that get called idiots first. And again this
link it's the Harmione ファン that are attacked and berated.
JK isn't God. Not only can she make mistakes, but readers can disagree with what she does. Thinking she made a mistake putting Harry with Ginny (or Ron with Hermione) isn't any different than thinking she made a mistake killing off a certain character, または handling a situation a certain way.
I'm not 苦い about the fact the Harmione didn't happen. I am, however, fed up with the derogatory コメント and insinuations about how I think and feel about the "end game" couples.