Anecdotally, Apple ID auth on iOS/macOS has been a mess for me. Changing my password would result in multiple login prompts per device. Sometimes inputting the

Anecdotally, Apple ID auth on iOS/macOS has been a mess for me. Changing my password would result in multiple login prompts per device. Sometimes inputting the new password works, sometimes another prompt comes up after a few minutes. Also, though the flexibility of being able to use a different ID for iCloud, home sharing, iTunes, App Store, Messages, etc. is neat, it's pretty annoying to need to set it in each of those places. (And TBH it seems like being able to share purchases/access/etc between IDs is more useful than being able to have separate ones, yet the iCloud family stuff took a while to arrive.) The issues I've seen aren't as bad now as they used to be, but they haven't left a good impression.