These lunarians come here with their rabbits acting all high and mighty, looking down on us earthlings and thinking themselves superior! If their smug attitude wasn't bad enough, the moonies that come here aren't even decent people. Those that have fleed to earth so far have been a criminal, a traitor, a murder and two spies. The lunar captial is sending us their worst and we're taking them with open arms like morons. Some might argue that they are fleeing a tyrannical government, prosecution or that they were falsely accused. However these arguments get imidiatly disprove by the way the arc, what sort of person constantly praise they very nations and the people that oppressed, falsely accused or attempted to kill them?
To quote the "princess" of Eientei herself:
" Of course you would. That's why you Earthlings will remain forever inferior."

Does this sound like the world of an oppressed, falsely accused refugee fleeing for her life?
They came to Gensokyou illegally, hiding in the forest for who knows how many years and we only became aware of them when they sealed the whole planet, only to be stopped by the efforts of our brave heroes. How many more crimes have they committed that we are not aware? After all the first time we saw them they were committing a planetary crime, attempting to imprison all of earth, and immediately went on the attack when they were discovered. After being defeated the first thing their "princess" did is trick people into attack a poor homeless woman. How despicable.

Now they pretend to be health experts, opening a hospital and selling medicine to the people as if nothing happened... a "hospital" that is located in the middle of a dangerous forest where people regularly get lost? Yeah right, we all know a money laundering operation when we see one. Plus that medicine they sell are hard-core drugs that get you extremely addicted to the point where you'll die if you stop taking them.

I say we send them back to the moon they love so much. After all if earthlings are not allowed to go to the moon then why should lunarians be tolerated on earth? Especially when said lunarians are a bunch of drugs dealers, frauds and murders.