>>49621883They're just possibly the furthest thing from what's appealing to kids and teens, and remember, while the /jp/ bubble may fool you into thinking Touhou is this franchise of veterans with a loud minority of underaged users, they are actually the majority. Touhou's popularity contest reveals that almost 60% of the fanbase is underaged (through the questionnaire's stats), and this part of the fanbase's votes skews more towards the more frequently exposed EoSD characters who on top of being more exposed, also happen to be easier to read, or have cool powers kind of just because. You can't expect children to really be into, say, a slice of life story about Urumi's fish selling ventures & sharing stories of the nasty tricks she used to pull back then, or Sannyo seeking wisdom from Nemuno's isolated ways, torn between her position, the events she witnesses, the stories that unfold, and what that position grants, notably tobacco for her dragon smoke, yet despite being a less reclusive variant of the Yamamba, she instinctually yearns for a more natural means of having these things come to her.
Childhood and teenagehood is the age of wonder and basking in the joys of your limited knowledge without knowing any better. A simpler time where the stories that impact you the most end with a clear resolution. The good guys won, the bad guys lost. It's certainly no time to get lost over trivial matters (or at most, the ones you can grasp, like school life drama), ponder on it, and not come to a clear conclusion. It makes sense for them to not be as into the newhu hags, that i'll extend to Urumi and Misumaru.