This has nothing to do with aircraft size, or the 'experience' of students. The technique works very well on light aircraft and with ab-initio students. I know, because I have been teaching it for years. The disadvantages of the 'other' method are:
a. It teaches a technique that has to be unlearnt later, because it doesn't work on real aeroplanes.
b. Taken literally, to extremes, it can encourage inappropriate (even dangerous) handling close to the ground (student lets the speed get a little low, realises and responds by shoving the nose forward. Unchecked result - a steep approach to short of the threshold, where extra power was what was really called for. I've seen it, many times, on tests, at the CPL and later.)