I was already working on teams where we got push back on too many changes so we had to scale back to monthly releases.
Modyfying database structure so fast? Good luck having useful insights when you mutate data so quick.
Maybe I am not smart enough having not smart enough customers but to judge if something meaningful is an improvement you need at least 3 months of data for a lot of things.
In project management the overall gains can be even smaller than that. If the task is not on the critical path (ref a GANTT chart), then speeding it up does nothing to overall completion time.
Of course the particular resource can still be freed earlier. Which might make it possible to do other things with it. But nothing on overall completion time.
If one underestimates the swtiching costs of changing the task a resource has, one can end up with negative effects on the original project.
"You can get 100x speedup on the 90% of your development tasks, but remaining 90% of them take the same amount of time with or without AI"