In parts of NY, where Jews and Moslems live among one another, they patronize the same butchers, with no conflicts.
In my neighborhood, a Halal food cart and a Hatzolah ambulance often share the same block. 
As a true-blue American, I understand the reflexive revulsion many feel, but I will offer a hopeful counter-narrative. Thanksgiving turkey may just be a gateway drug for some moslems to experience "being American". That can't be a bad thing.
Kosher and Halal are pretty much the same, because Mohammed got most of his ideas about food preparation, and which foods to eat, from the Jews and from his imperfect understanding of the Bible.
There is nothing about kosher or halal food that isn’t perfectly OK for a Christian to eat from a physical perspective. The sticking point is blessing it in the name of Allah.
That should be a sticking point for strict Orthodox Jews, as well. When the Book of Acts forbids eating meat that has been sacrificed to idols, it is thinking chiefly of Graeco-Roman practices. But what the Apostles were arguing about, in that chapter of Acts, was which Jewish ritual laws they should retain, and which could be abandoned. They drew the line at meat sacrificed to idols—i.e., false gods.
If Allah isn’t a false god, I don’t know who is. Sure, Islam is Monotheistic, but just take a look at some of the things that Allah orders, and then tell me that he is the same as the God of the Bible. Much of what Allah orders his followers to do is devilish, unfortunately.
That's almost exactly what a Jewish friend of mine said the other day about this kerfluffle. As he said, the point of halal is assimilation. If Muslims wanted to continue eating their own special Muslim-only meats and Muslim-only dishes, they could. But they want to eat turkeys for Thanksgiving. And Butterball wants to sell them those turkeys. Like you say, that can't be a bad thing.
Coca-Cola tweaked its formula back in 1935 to ensure that Coke was kosher (and they sell sugar-sweetened Coke at Passover too). It was good for business, and it helped to foster a sense of American inclusion.