I Hope I'm Not Coming Across As Fandom Police - Tumblr Posts
Someone saying they hc a character they hate as asexual doesn't necessarily mean they're acephobe though. It's just interpretation. If a character doesnt show romantic interest in anyone they can be interpreted as ace it's not too far fetched and has nothing to do with whether or not they hate the character.
The said character is Neji Hyuga. And while yeah his sexuality is never explicitly shown and he can be interpreted as aro ace. But op hated neji, they didn't show any interest whatsoever in his character development and wasn't phased by his death. With that context, obviously you wouldn't be into any ships involving him. Op could've just said that. Saying they see him as aroace, while doesn't necessarily mean they're aphobe, does raise questions about how op sees aroace people.