Would you mind explaining that to the Armenians, Greeks, and Kurds living (well, who used to live) in Turkey? Of perhaps to the non-Muhammedans living in Muhammeda-controlled areas of the Former Yugoslavia?
The religion of Islam teaches very strongly that converts to Islam are to be accepted as brothers regardless of their ethnicity. Which does not of course mean that this teaching is always implemented.
The Bosnian Muslims you mention are actually a good example of this. They are descended primarily from Serbs and Croats, and perhaps other ethnic groups, who converted to Islam. Nobody seems to spend a lot of time obsessing about who their ancestors are.
Even the "Turks" in Turkey are largely descended from the original Greek inhabitants of Anatolia.
The actual religion of Islam is quite different here from various "Arabist" groups which glorify the Arab "race" in terms not different from the way the Nazis talked about the Volk. But this is a deviation from Islam, just as Nazism was not Christian.
I'm the first to agree that many Muslims hate non-Muslims. But hating someone for their religion is very different from hating them for their ethnicity or "race," which they cannot change. During most of the Middle Ages, in much of Europe a Jew who converted to Christianity was quickly accepted. The Nazis converted the religious hatred of Jews to a racial one, for which the only logical response is extermination.
Johnny Walker, or whatever his name is, the American Taliban guy, was apparently immediately accepted as a fellow fighter by the Arabs, Chechens, Afghans, etc. in the Taliban, despite his "Anglo" appearance.