I mean, that's the point of Dune? The 'prophesies' aren't real, they're seeded by the Bene Gesserit, the same group that spent millennia breeding the 'savior'. And, he's not meant to really be a savior, but their catspaw.
But also, he's definitely not actually a savior, on account of all the death he brings. It's complicated, but overall a deconstruction of white savior narratives and similar stories.
Decaf does actually still have caffeine, just normally like 97% less.
Which, I guess is like the boneless wings having 97% less bones, now in convinient needle shaped shards