The "more later" was the bit about what students were taken through at first when they started young. Younger students, esp. younger military students such as Sifu Eddie's great-great Grandfather, were taken through a daily routine that was almost brutally intense. The tradition in the Wu family is that Yang Lu-ch'an had the cadets train their long form 10,000 times in the first three years after they'd learned it. Only after those three years were they shown pushing hands. That works out to between 9-10 forms a day, every day. As well, they were 40 minute forms, and as the three years went by they were lower and lower in the knees. the instructors would carry a staff, they would place a string across the courtyard, and if any heads bobbed over the string at the wrong time during the forms they were thumped, hard, by the instructor's staff. As time went on the string got lower and lower. You have to remember that these were all teenagers, and future officers of the Imperial Palace Battalion, so Yang made sure they knew exactly what they were doing before he would show them the next thing.
That was pretty much the traditional teaching method until 1914 or so, when Yang Shao-hou, Yang Ch'eng-fu and Wu Chien-ch'uan started teaching the general public at the Beijing Physical Education Research Institute. That is when they had to smooth out the forms and take it a bit more easy on the older, relatively more out-of-shape students that they started to get after that. Curiously, it is said that when the Yangs and Wu Chien-ch'uan smoothed the tempo of the forms they were teaching beginners, they found some energetic benefits in the smoothing process. The story is told that it became apparent to them that students didn't disperse the inner energy that they were cultivating in a smooth, even form as much as they did in the explosive "fa ching" forms taught to the military students. The benefit was considered so remarkable, and saved so much time thereby, that the smooth forms were subsequently made the Yang and Wu family standard for all beginners. In the Wu family schools (and one assumes in the Yang family as well, although I don't know for sure, it is said YCF in his later years only taught the smooth form), the fa ching forms were still taught at advanced levels, especially in the weapons forms, after the students already had plenty of inner energy.