It’s all theater at this point. If you watched the video of the collapse it was apparent that there weren’t going to be any survivors so why endanger the lives of the fire/rescue guys at this point. They have better things to do. Either leave the rubble as it is or get the excavators in there and clean up the mess.
Search and rescue efforts always go on beyond the reasonable time you can expect to actually find a survivor. Rescuers never want to give up and family don't want them to. Someone has to tell them it's over, and it's not an easy thing to do.
They can’t get the excavators in until they drop the still-standing part of the building.
“It’s all theater at this point. If you watched the video of the collapse it was apparent that there weren’t going to be any survivors”
ESPECIALLY given the amount of time that has already elapsed ...