NOT ALL LIGHT SIDE FORCE USERS ARE JEDI
The Jedi are an order, like the Sith. Just as not all users of the dark side of the Force are Sith, not all users of the light side of the Force are Jedi. The word Jedi is not synonymous with “Force user,” because the Jedi are a very specific kind of Force user. Even without using examples from Star Wars Legends, there are a number of users of the light side who are not Jedi: Ahsoka Tano (Ashley Eckstein) is a former Jedi who leaves the order; Maz Kanata (Lupita Nyong’o) was never trained as a Jedi, but is skilled in the ways of the Force; Rey (Daisy Ridley) is not a Jedi – or at least, not yet. While Luke is referred to as “the last Jedi,” he is not necessarily the last Force practitioner who embraces the light side of the Force.
Additionally, not everyone who trains to be a Jedi actually becomes a Jedi. Initiates have to pass a series of tests in order to become padawans, and many fail and are reassigned to work for the Jedi order in other roles. As Ahsoka notes, only the top of the class goes to the Gathering to get their kyber crystal from the caves of Ilum, which is one of the early steps on the path to becoming a Jedi.
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