Did Obi wan's message after Order 66 explain where Ahsoka, Ezra, Cal, and the others are?
"Do not return to the Temple. That time has passed."
I just had this thought. Everybody's trying to come up with all kinds of explanations for where the non Skywalker-related Jedi are in the sequel trilogy and whether or not they were killed in the knights of ren's attack on Luke's Academy and all of that, and I think the explanation has been staring us in the face the entire time: the other surviving Jedi just fundamentally disagree with the idea of trying to rebuild the formalized Jedi Order in the first place.
Ahsoka walked away from the Jedi Order, and has a very complicated relationship with whether or not to call herself a jedi. Ezra was trained entirely informally by someone who never completed their training, and unlike Luke he never had any kind of expectation that he had any kind of special destiny to fulfill. Cal was give in the opportunity to rebuild the order in Jedi: Fallen Order and was then given a vision of what would happen if he did, which was that the inquisitors would do Knightfall 2.0.
Then you have Rey's story, which is pretty much entirely about walking away from the legacy of the formalized Jedi Order. I'm willing to bet that she goes about things completely differently from how Luke does, doing the whole knight errant thing and trading apprentices along the way, the same as the other survivors do, and if any kind of institution or Temple arises from that, it does so organically, not because someone is trying to rebuild the pre-order 66 Jedi Order.
Because contrary to what Benioff and Weiss said, themes do matter and they're not just for 8th grade book reports.