The idea that you can "teach mechanics" to sprouts is literally the source of the rot that has afflicted pve. The older versions also had mechanics, the difference is that not only were they considered out of the current pve direction, but that they also were all unique in their own way. Teaching mechanics the way dungeons are being changed is actually about teaching a formula, because it's literally teaching a set of interchangeable basic mechanics like stack, spread, etc, an expecting that every encounter later will be an endless variation of the same slop.

Even the advanced Hall of the Novice they added at lvl50 is literally all about this. It favors mechanical rote reproduction over creativity and uniqueness.