I think you are just overlooking a lot of data points to get proper context. We have been at war a few times with a nation and their colony that speak our own l

I think you are just overlooking a lot of data points to get proper context. We have been at war a few times with a nation and their colony that speak our own language, the UK and Canada; two nations that spoke a language fairly close to ours, Mexico and Spain; and have pretty much always been allies with a nation just as close to us linguistically as Spanish, France. In modern times we are currently just as allied to Turkey, Korea and Japan as we are to our western allies, and to a lesser degree with Saudi Arabia, who are all far more similar linguistically to our enemies than to the vast majority of Americans.