

Usually they are because they need to have their transponders on for this exact reason. They usually turn them off when they’re entering no fly zones / going on missions. During the build up to Iran firing missiles on US airbases in Qatar you could watch a lot of German and British military planes fly close to the border, turn off their transponders, then reappear a while later on the other side of the no fly zone.
Oh no the 800kg car now weighs 802kg whatever will we do? all the cars are below the weight limit now so they can probably just remove ballast instead