Thinking about it, it IS funny no one realised Yayoi doing Yayoi stuff. Not as big as top tier exoercist but it's not like Yayoi being subtle about her activities lol
That's what I thought too, but I think it's most likely because all the information Yayoi has on all the ghosts comes from the internet. There are definitely more older and more dangerous ghosts out there that don't have rumours on the internet, for example, the Buddha ghost who once "ate" whole train passengers and Tein, who can make older spiritualists take notice when it moves.
Considering that for centuries, the spiritualist has had a deep tie with the government. We might need to take into account that human settlements are created to avoid the power spot where these ghosts settle.
That panel when Oboss heard all the details of Yayoi cursing all of Kyoto to take down Taisai is utterly priceless.
He probably didn't expect Yayoi almost committed spiritual terrorism

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Yeah, I mean, you just need to search the current Kyoto population, and you can get the exact number of casualties that would occur if the curse gets broken. The more I think about it, the more I can see where Oobashi's concern comes from. Unsupervised, Yayoi can become as dangerous as the replaced, because she will do anything to achieve her goal, as long as the plans don't involve her family and friends.
Fighting girl Ai-chan. I just hope Taisai won't make her to become a muscle head like him.
It's either him trying to gaslight Ai to become one or Ai herself is already one, just without the power to act on it.