I mean.. I just took it as Rey's arrival triggering him too, mainly with her now discovering the force and finally being brought to the base (since she was also away, captured by Ren when the rest were there before). But from the perspective of Abrams & co., with 3PO's "he's been like this since Master Luke left" line, I feel like our reading of it is likely true, but the truth is likely more rooted with her potential family lineage (whether it's as a Skywalker, a Kenobi, or whatever), and instead of leaning into that in interviews like this, they just used the BB explanation as a weak backup.Quoting number8 (view post)
Or laziness in the writing. There's always that.