I don't think anyone has ever used Furyk as a model for their stroke. That said, what his stroke was as a young man and even during his college career was a more obvious figure 8 which is not all that uncommon among the guys who play great with 'a lot of moving parts'.
I agree with you that you should use the simplest way possible. There are many ways to deliver a cue and how to feel that stroke. People will have preferences and that extends to what they prefer to simplify. For any details on pool strokes, you'll have to wait for the book, but let's stick with the figure 8 type golfers with a ton of moving parts to illustrate. Rather than having locked down mechanics and a bunch of immobilized body parts, these guys make sure that if they make a certain move, what their body will do as a result will repeat. The figure 8 is a great example of this as if you track the full range of motion of the shoulder in a fluid swinging motion, it will make a figure 8 (think closed stance tennis backhand transitioning into an open stance tennis forehand on loop).
These figure 8 guys KNOW if they send the club along their max range of motion it will track what their body's limits are and do so predictably. Then it is just a matter of setting up such that their predictable, repeatable move results in the club going through the ball. Orientation of the clubface also doesn't need to be manipulated because the face will be where it is based on how they hold on to the club (not unlike how a tennis grip affects racket orientation during the swing and the type of shot it produces). So, even tho the swing may look like it has a ton of moving parts and would be difficult to coordinate, by leaning into their body's ROM limits, they can ride those limits like rails and produce very repeatable strokes. Furyk is one of the best ball strikers ever. His stroke, to him, is simple. It doesn't feel anything like what it looks like as he's mentioned in interviews. But when he makes his most trusted, repeatable move, that is the look that he gets.
Some pool players, use a similar approach. They find a very repeatable move which they can fully trust to repeat. Then they set up in a way so their move sends the cue tip where they want. If the move requires some other body parts to get the whole thing going, so be it. At the moment of truth (impact), their cue tip will be behaving in a predictable manner and that is what they are after. These action-reaction or domino sequence type strokes can often have funky appearances, but in terms of what the player is actually doing, they are very simple indeed. My stroke is simple. The model is elegant. And yes, it has more moving parts than a pendulum stroke. But I understand it fully. I understand why it works as it does. And this not only helps me fine tune and adjust on the fly if something goes off (no technique is immune to this), but it allows me to absolutely trust it...which is very useful under pressure.
I don't think it's 'better', but I know it is better for me. And that is kinda the point of the book I'm putting together for the pool community. I present different methods ranging from one end of the spectrum to the other across various stroke components. Then readers can decide what jives with their preferred movement style and personality most and build up a technique of their own, using the guidelines presented for stabilizing joints and securing swing planes they prefer.
As for 'you have to start young to play X technique'.... If you understand how the body works and have a clear concept of what you are trying to do, this is just not the case. I learned a sidearm chicken wing stroke in about 5min in my mid 30s and was running racks with it that night. It's in the book. Plus I run readers through what I did in those 5min to learn it. That said, understanding of other concepts presented earlier in the book is a prerequisite for understanding this style. Those concepts won't only help people understand these nonstandard strokes which I mostly started diving into as fun movement puzzles to solve, but they will deepen people's understanding of THE fundamentals and the functions they are serving, not merely their appearance.