I'm not saying they're all prone to be that way or should be treated as such, but there is an anti-American/Western mentality they often exhibit. Granted, with all the meddling and wars and exploitation that has been visited upon them, such a reaction is understandable, but it's more than that. In general, of those I have known, only Muslims from countries such as Senegal and Gambia, etc, seem to like it here and the people. From what I've seen, those from Somalia, the Middle East, Asia, and Europe tend to have a certain disdain for America. They don't always make it obvious, but if you're close to them and maybe of some possibly marginalized/alienated ethnicity/race/religion and they're comfortable with you, they'll be more open about such.
Your interpretation was appropriate because I had not added any context. It was a throway meme (as the rest of mine), and was mainly meant to pester that fella from the flame war.
I've had a few spats with him, but months later I entered another one were I ended up sort of defending his position when some anti-Palestinian types got in. He kept quite after I did for the rest of that one.
He is super hostile, but more recently I learned he apparantly is from Iraq. So his anger has its unfortunate source.