Oh, wow, after I read those translations, the protagonists seemed to be bigger jerks than the actual 'antagonists' in this game. Though, as long as there are youkais who don't care about humans (or maybe
eat humans), a human-youkai relationship wouldn't work to its fullest, unless of course, they could get the high-end youkais (Yuka, Remilia, Yukari, etc) on their side to monitor the actions of lesser ones, but again, that's pretty much impossible.
One thing to note on Reimu's part is that her dialogue basically boils down to, "I'll beat up all youkais/everyone who is a friend to youkais," while she
herself befriended some youkais (Yukari and Suika come to mind). Heck, her Hakurei Shrine is
also apparently a popular hangout for all the other girls who Reimu and company defeat in the course of the Touhou games.
Considering the majority of the cast in
every Touhou games are youkais, her shrine is basically a youkai home turf.
Even Marisa gave a more just reason of humans needing more protection from dangerous youkais. Although Sanae is basically being a nazi to youkais in this game, she was taught by Kanako, after all, so it's not entirely
her fault.
Keep in mind that the youkais in the story are far more reasonable than... EX Stage, where Nue was basically just screwing around for fun. With that said, I can't wait to read the translation of the Extra Stage and possibly getting more laughs.