With the reveal of Episode VIII’s title (and that dope red type), we’re all having fun speculating on exactly what the linguistically ambiguous The Last Jedi means. This goes so far as examining the title as it’s rendered in other languages to try to discern whether the Jedi in question is singular or plural. From what I’ve heard so far, the German and Portuguese renditions indicate a single Jedi.
I think and kind of hope that means Luke is the last Jedi. As in the last last Jedi.
Here’s my theory: Luke considers himself the last Jedi not only in raw fact but because he wants to chart a new path for Rey. Something along the lines of, “I’ll be the last of the Jedi because you’re going to be something greater.” And a new order of Force users is born without all the baggage of the Jedi/Sith wars that have roiled the galaxy for centuries.
Why do I think/hope that?