blindVigil said:
According to Touhou, the main thing that keeps youkai alive is fear and faith, not specifically the flesh of humans. That's why Gensokyo exists, that's why the human village is off limits, because they serve as a constant source of fear and faith in gods and monsters in a pocket world separated from the faithless outside world.
And that's kinda the whole point here. Anything that isn't human in Gensokyo is kept alive by fear and faith, for youkai and gods/goddesses respectively. To maintain that fear in the human heart, Youkai eat human, just not from the village but is supplied by Yukari. They don't need to eat human to survive, but eating human is a way to sow fear in other human which is what keep them alive.
And to keep faith flowing, gods/goddesses bestow blessing and protection on human.
One prime example is the Moriya shrine's cable car in WaHH, the tengu and Kanako struck a deal under the table, the former cause a little disturbance to remind the human that the Mountain is their domain and sow fear in their heart, Kanako then appear to solve the problem to increase the human's faith in her, typical hero vs villain situation but it worked out wonderfully for both sides.
The only reason why we don't see much human consumption is because youkai wise, while the cast is diverse most of them have no need for human meat/no longer have a need for human meat/have other alternatives to human meat, but the fact remain that they are youkai and they will eat human if given the opportunity and permission.
Not all youkai in Gensokyo come from Japan, sure, but even among the foreign ones there are man-eater type, it's just she preferred drinking blood over dirtying herself at the table so there's that.
It's not that I am mad, far from it, I am simply finding it ridiculous when so many people are refusing to accept the in-verse reality just because they want to keep their own headcanon, even disregarding Words of GOd.
It was years ago that an argument about this same point was sparked, on this very site, the post back then was also one of Zounose's work, I believe.