I think they were in a bubble for a long time, and then it was too late to change things. Or maybe the gameplay which had been decided was actually worse and less consistent, but this was the least damaging alternative gameplay.
The big problem with the game was the sheer amount and type of data needed to construct the scenes in which the characters are acting. The full body and facial capture stuff must have been crazy, and once the data was there, it's immutable. There's no way to get the actor to read a line over the phone for a correction, or use the logitech mic on their computer, or even drop by a local recording studio to have them do pickups -- none of the standard Hail Mary plays work with the kind of data they needed to show a character doing their thing.
So they likely had all that performance data, and it was not going to change, but they had to figure out how to "fix" the gameplay around the writing. It's a bad situation to be in.
Seriously, the way they used the touted performances in those sequences, you can't even change the viewing angle, other than to look up and down. The whole thing might as well have been FMV, for all the good their problematic technology gave them.