It’s not a demotion for Hoskins or Segura, it’s out of respect for their individual skillsets.
The exact batting order the Phillies use isn’t going to matter that much. The team has a great lineup, and it will remain great no matter who’s hitting leadoff, cleanup, or anywhere else.
Okay, great. Now that that’s out of the way, I can spend the rest of this piece discussing the minutiae of the Phillies batting order, because it’s fun, and because it does matter, even if it doesn’t matter that much.