I think it makes more sense if Exegol was the place they went after Moraband fell, because we’ve already seen Moraband and there’s less reason for the characters to need to look for it. Especially since the character who initially says “Exegol does not appear on any star chart” is R2-D2, the one character who should know exactly where Moraband is, since he’s already been there.
Hmm, yeah, that’s true. Good catch. Maybe I’ll just try and change 3PO’s definition of Exegol then. Something like “Legend describes it as a lost temple to the Sith,” instead of “Legend describes it as the hidden world of the Sith.”