Is that the whole truth, or just half the truth?

Well, this guy is clearly a propagandist that tells half the truth. First the picture is ai slop. The Balkans were not over half Muslim, but it had a higher percentage of Muslims than today. Yes, there was hate against the muslim population during the Ottoman occupation that lasted 500 years, but this was common and spread among every oppressed Christian ethnicity. Serbs, Croats, Greeks, Bulgarians etc. During this time, Christians were oppressed, had to pay high taxes, their children were stolen by the jannisary army, they didn't have the right to own land but were subjugated and Muslims owned the land (timar). They were brutally tortured during ottoman occupation. He never mentions that, because of his one-sided narrative. During the uprisings for national liberation from the Ottomans, many Muslims were expelled, but this was not just the local converted population, but Turkish settlers also. This has happened throughout the whole Balkans. Many Muslim Slavs were expelled from central Serbia, and they fled to Bosnia. Now Bosnia was never liberated by the Ottomans. Bosnia was occupied by the Austrian Empire in 1878 and annexed in 1908. Bosnian Muslims were the Ottomans' first-class citizens because of religion, they weren't oppressed and did not have to pay jizya taxes like the Christian population. Over centuries, this grew animosity towards them, and they were called poturice (which means "turk-convert") by Bosnian Serbs and Bosnian Croats. They were never really expelled or genocided by the Austrians. Many of them left for Ottoman lands because they did not want to be ruled by an infidel ruler. Later it became part of the Kingdom of Yugoslavia. There was some kind of discrimination during that time because Bosniaks weren't recognized as an ethnic group. They were simply called Muslims. This, however, changed during communist Yugoslavia. Bosniaks refused to call themselves Croats and Serbs and would rather stay unidentified, so the commies gave them the right to self identification under the name Muslims (with a big letter M). During WW2, Bosnia was part of the fascist state of Croatia. During this period Ustashe genocide against the Orthodox-Serb population happened. Bosnian Muslims were not targeted but were considered Croats of the Muslim faith. Many Bosnian Muslims were part of the Ustaše army. It's also important to mention that many Bosniaks got killed in Eastern Bosnia by Serb Chetnik forces. Many of them were part of Yugoslav Partisan forces. What this guy mentions (christanslavdom) is actually called Svetosavlje. It's a far-right Christian nationalist ideology. He tries to portray it as common belief among the Serbs, but that is a lie. Now, during the 1990s Bosnian war, chauvinism, propaganda and ultranationalism did indeed go by the narrative in the video (expell or kill). The International Crime Justice courts for war crimes concluded that Bosniaks from the Srebrenica enclave were the victims of genocide. Many Bosnian Serbs military commanders were convicted guilty of genocide, ethnic cleansing, and the torture of Bosniaks. What this guy does not mention is that many Serbs and Croats were also victims of war crimes and ethnic cleansing. This, however, does not change the fact that Bosniaks were the biggest victims of the war. It's a lie to speak about 150 years of multiple genocides. Bosnia was never liberated by the Ottomans, it was never conquered by the Kingdom of Serbia. The Austrian empire or Yugoslavia never committed genocide of Bosniaks. They wouldn't be a majority in Bosnia today.