I think we take this advantage/disadvantage concept; philsophy; criteria too far when it comes to making the proper call regardless of how much time is on the clock. The OP made a call which is very clear some DO NOT HAVE THE GUTS to make.
Assignor: I seen the game; good game until towards the end there was a foul which should have been called. (Displacement) POE
Official: Yeah, I was applying A/DAD because there was only 4.9 seconds left to play in the game.
This would go over well.
I understand where CoachP is coming from. To be able to identify that when it's close to closing time( game ending) some official(s) just wants to get the game over with and go home. This is the area of the game in which officials need to be more attentive. The closing seconds of a close game. Every officials should manage the game from opening whistle to final horn and then observe the hand shakes at the end.
In the OP close game, a physical play happen DISPLACEMENT which is a Point of Emphasis this year. Great call!!!