A critical part of moving people through on arrival is to be consistent and provide less variance in times for an individual to clear entrance/re-entrance formalities and make connecting flights. Getting rid of MPC and scaling back on APC is not progress in that direction.

Even as a GE member, I miss MPC at IAD.

I will note that CBP doesn't really care that much about side-lining APC kiosks since it's been primarily the airlines/airports that have paid for the APC kiosks. MPC didn't involve a major CBP capital investment either, so I'm not surprised to see MPC scaled back, especially as CBP wants more people to pay up for GE than to use MPC to get nearly the same kind of outcome in terms of time to get landside.