Board Thread:Fun and Games/@comment-27524978-20160317154321/@comment-27620479-20160425061846

Yes, but it is only plausible, and not outright stated, or something.

It is a touchy subject, I think mainly because it interferes with scapegoat Chara. Once it is accepted that Chara, well, narrates and can have more complex moral standing than Flowey, they can't truly be the genocidal maniac, and the player has to take some responsibility.

This is probably also the reason why it is treated so unfairly. Other headcanons or theories can get away with marking them as canon, even if there is next to zero supporting evidence to them, because they don't interfere with what the players think of themselves.