in an enemy territory? Yes, accidents happen, but why would they do it intentionally? Military drones often boast high-spec electronics, software, data and intel that could be very dangerous in enemy hands. IDF is sometimes "balagan", but they are not stupid.
Hitler looked for a pretext to invade Poland. So he staged an attack on Gleiwitz and blamed the Poles. Hezbollah is looking to rally Lebanon to attack Israel. It does not have to worry about the Lebanonese people looking too closely at this incident or being much concerned with the truth. They are always looking for a good reason to attack Israel.
The reason drones fail is because the only good drones always have three words printed upon them ,as a sign of quality : " Made In China. "If those three words are not there ,the drone will not be good quality nor fairly priced..