Go look at Hawayek and Baker as juniors. Look at their blade control. Look at their unison. Now Baker is just one of those luckily intrinsically talented skaters (and I think vastly underrated by the judges so far as a senior). But look especially at Hawayek.
Now look at their FD from this year's WC. The differences in blade control and depth of edges and unison will astound you. And yes, even the twizzles.
Why? I think it's because Krylova and company forced them to spend months doing basic stroking exercises. Hour after hour after hour of basic stroking exercises. It isn't Ms A waving a magic wand over a dance team and voiila! It's work. Lots and lots of work.
Hawayek's problem with consistency isn't technical. I think it's nerves. She's worked her fanny off; the basic technique is now solid. And they both have underrated knees.
You can see it with the juniors. The Russian juniors tend to have very solid technique, especially with the patterned SD.
So why do none of them make a dent in the top tier as Seniors, with the obvious exception of B/S. Why then do they seem to lose that technical proficiency when they move up to Seniors? Frankly, the newest Junior WCs don't particularly impress me and I don't expect them to be a factor for at least several years (if ever). Why?
Because someone needs to tell Russian coaches the world has moved on from the Golden Age of Soviet/Unified/Russian skating. They look at least a generation behind the curve. At least.
And it's work. Lots and lots and lots and lots and lots of hard work. You can't just emote your way through a program anymore.