Actually, the experts who recommend taking up a defensive position and calling 911 rather than trying to confront an intruder include all of the well-known instructors, trainers, and writers in the field of home defense.
Taking up a defensive position and being willing to fight, if necessary, IS confronting an intruder. Best time to do it is before they get in. The safe room is the next place to make your stand if they are in.
Perhaps what you mean is that going out from your position of cover to confront them once they are in your house is not recommended. I agree.