There are a lot of Star Wars traditions at play in Ahsoka, and the title of the fourth episode, "Fallen Jedi" is one of them. Back in 1999, fans had many questions after Episode I debuted, but chief among them was "what was The Phantom Menace?" The answer was revealed to be Senator Palaptine and his Sith-y ambitions. In this episode, there are number of candidates to whom the title could refer. This means that while fans might think "Fallen Jedi" refers to Baylan Skoll, it could refer to almost any other character in the episode.
Source：https://www.cbr.com/fallen-jedi-ahsoka-not-who-fans-think/
