I think judges save high PCS for the last skaters and because Akiko went toward the beginning in both the short and free at the GPF they were probably just waiting to see how everyone else did
Are you sure about that?
Maybe someone else can explain how that would be against the rules of the current scoring system............
ETA: and feel free to take a few swipes at 6.0
There was never any rule requiring judges to save high marks for later skaters in any judging system.
In the 6.0 system, it was necessary to leave enough room to place all the skaters.
So if you saw
this or
this from the 2nd skater in the short program skater order with 35 or 28 skaters yet to skate, they weren't going to get 5.9/5.9; that only leaves room for at most 3 more skaters above them. But those performances did get some 5.9s and did place 2nd and 1st in those respective SPs.
At a Grand Prix final with only 6 skaters, it's not necessary to leave room for more than 5 more skaters.
In the IJS, no one ever gets 10s (a couple of enthusiastic judges at this year's Skate Canada aside), and certainly not for all five components from the same judge, so there's always plenty of room at the top. Also, it's not a comparative system the way 6.0 judging was. So if six skaters are similarly excellent, there would be no problem with a judge giving them similar or even identical high marks.
In practice, judges may perceive greater excellence from skaters who have often demonstrated it in the past than from newcomers with whom they're less familiar. Not that they're intentionally trying to hold up the favorites or hold down the challengers, but that to some degree they see what they expect to see and mark accordingly.
On the other hand, I think fans tend to root for underdogs and get excited about refreshingly good performances from skaters they're not already tired of seeing at the top. And may overvalue clean or enthusiastic performances but not perceive finer details of basic skating quality.
There may be some of both going on here.