Man, I have a great distaste for Islam. I really don't like it, and am probably quite biased against Muslims (though I obviously try not to be). And I cannot lend any credence to the objections to the building. Even if it were a full blown mosque, I wouldn't care.
Come, build mosques. Move in. Welcome to the neighborhood. Bring your people. Bring your culture. Welcome to the best melting pot on the planet. Or, at least it used to be.
Sheesh. We're a free liberal society: you cannot protect a free liberal society by

whenever a church goes up. Or a community center. Or whatever.
If you want to defang Islam, just help encourage critical thinking and proper historical knowledge. You can't outmilitant a militant religion, you're going to fail. All you can do is culturally outcompete it.