Humans falling into Gensokyo seem to hold no resentment towards the youkai eating them, sometimes not even becoming evil spirits.
This provides poor nourishment for youkai, who begin restlessly asking questions.
Finally, Mamizou, with her outside world experience, steps forward with an explanation: outside world malaise has made modern existence far more dreadful than being consumed by youkai!
The solution? Gensokyo must evolve! Overbearing OL Gensokyo!