twocats Here are her three videos that I first watched.
First and recurring impression: Molly begins with "the ("usual") way we practise" and this is a particular model: long hours daily, going through your pieces etudes and whatnot; multiple repetitions. She came up with a different way of practising. We have to start with some assumptions: that "usual way". I suspect that she had that usual way since the start, and in recent years she has found an alternate to that "usual way".
This usual way - the things she is countering - isn't done or taught by everyone, but I suspect it is common, and esp. for those on a given path, and maybe the ones who end up in music studies at university. The ideas she presents are ones I've seen taught, when I sought it out myself, and applied by many musicians. That is, they don't do endless repetitions and all that. For anyone who did get stuck in this "usual way", what she is presenting may be a way out into something new and better.
On this point, when I joined PW in 2008, in the teacher forum one often saw "how many repetitions do we tell students to do?", "How many minutes/day do we tell different ages to practise?" and "Can we let them have one day off in a week?" So this "usual way we practise" seems sadly widespread. I'd push against it.
The context of "usual way" seems very important. She is countering this "usual way". This to me seems the invisible (elephant?) central thing. If you've not been in those boxes, you may see all this differently.
For me, what is presented with the schedules and such, seem very regimented. If they are created by someone who was taught via regimens and routines, it makes sense that the alternatives will also be regimented because that is what is known. The (university) students who have had regimens will be looking for alternate regimens to the existing regimens. I'm not comfortable with such schedules, and it's not just because of my character; it's also because of what I've found to work. I suspect that the discomfort of people such as Pianoloverus may be along the same lines.
The ideas themselves, I'm familiar with all of them (and a few more) and they are good ideas. They can be applied more flexibly or more creatively. It may also be that an individual student or growing pianist needs to have something scheduled, to have routines set out, and this can be a "starter". If it gets you places when before you were constantly on the hamster wheel going nowhere, then it's the right thing for you. It is possible and even likely that over time you'll start tweaking and changing things; you'll start discovering things on your own which brings you beyond these things, but maybe born out of these things.
I've also seen in some discussions where someone tried the system and got stuck inside one of the schedules. This part over here doesn't work; or this timing isn't compatible with having a piece ready for the next lesson. In that case I think you'd want to tweak the schedule. The ideas and concepts would come before set timing.