JiffyPopTart
Bree-Yark
I'm just speaking real world experience. I printed it out and had a few minutes on break at work to read it. I didn't start novel style, but instead flipped through the pages reading some bits that caught my eye. I stopped at the sample backgrounds (because it takes up a lot of room in the packet just to show examples) and thought it was dumb that they still has set modifiers in the game, only now moved to a different place.None of these books should be written to save players from themselves.
If a player chooses not to read the Player's Handbook about character creation and chooses a Background from the pre-rendered list without reading the section and realizing their first option was to make their own... and then gets pissy after the fact that the Background they chose had two ASIs in abilities they didn't want and could have in fact had them on two abilities of their choosing but they just didn't realize it... that's on them.
WotC has enough stuff to put in these books without having to spend paragraph and after paragraph and bolded header after bolded header waving their arms to say "HEY! HEY YOU! READ THIS! THIS IS IMPORTANT!" It's a rulebook. The entire thing is important. If you don't read it... don't complain when you make mistakes.
In between glancing and reading from front to back I saw at ENworld people discussing the actual background system and realized it wasn't really "fixed but movable" and instead "assignable".
That said, and after pondering a bit, I think it's poor design overall to have the stat mods moved to the Background portion of character creation. If it's truly assignable it should be placed directly after the section on how to determine your stats (rolling, point buy, etc).