That implies the majority here support her. They're not actively against her, but most people here are ambivalent towards her. She doesn't get directly involved with things here very often. If they were trying to rally us against Amaterasu, they failed as soon as they declared open warfare on her.

[And while Shun knows one of the reasons Amaterasu doesn't get involved with things much, with her being a child and apparently subject to occasional grounding by her advisors, it's also information he told Amaterasu he'd try to keep close to his chest if he could. Her current state isn't the kind of thing that needs to be spread.]