Albanian nationalism is currently one of the biggest threats to security in the western Balkans. Just ask the Macedonians, who have Albanian partisans roaming their countryside. This is why we shouldn't shrug a gesture like this off as "understandable", regardless of what the Serbians did 20 years ago. If a Swiss(!!!) player makes an eagle gesture, organisations such as ONA or UÇÇ may see this as an invitation to fire bullets in the name of said eagle.
Just to be clear: The aim of these nationalists is not to have Kosovo internationally recognised or to have minority rights for Albanians in Northern Macedonia or Greece, but have a Great Albania that is only for Albanians, at the expense of any other ethnicities living there, by military means if need be. These guys are Albanian Nazis, and they will draw a lot of legitimacy, strength and support from a gesture a Swiss player made against one of their sworn enemies. That's why we shouldn't downplay or accept what is happening here. I'm not saying Xhaka and Shaqiri are of their ranks or supporting their goals, but I am saying they are helping them out here a lot.