I don't think the practical exam has made the slightest difference to the quality of r/t.
It's down to how good the Flying Instructor was at teaching along the way.
I have heard dreadful r/t from Commercial instructors.
Basic r/t could be written down on one sheet of A4 paper.
One way to stop infringements is to mandate six month compass swings!
Nearly every aircraft I have I have sat in the compass has been off.
We had one aircraft come back from service with new compass installed that was 25 degrees off!