There were a lot of rumors and theories about how all of the current bridges to the elemental planes had seemingly calmed and become more stable. The manas leaving them had also become more harmonious with the world as it was.
While many were beginning to hear that Walker had helped establish a bridge to the elemental planes, that was still just a mix in theory for the rumors. Not that it was a bad thing.
With people being suspicious and curious, it was spurring even more study in the manas of the world and how they flowed. That was a necessary thing for the people of Genesis.
Walker quickly caught on to the rumors since he had gone back to Genesis earlier than Gil and Alma. The simple reason being that he wanted to check on the witch born who had already reached Genesis properly and would have some questions or concerns that he might be able to handle better than others.