I’ve tried to be respectful about this in previous posts, but you’re seriously over-hyping the knowledge involved in 14.1. If Filler, a 20 year old kid who has spent most of his very short career playing rotation games, can knock in 260, he can knock in 500+. As you mentioned in the same post I quoted, it would just be a matter of application of time.
I’m still waiting for an example of straight pool knowledge that isn’t obvious to any experienced player of cue sports.
For example, there’s a bunch of stuff in English billiards that requires someone to teach you, or years of experience to learn. Let’s say a snooker player makes a hundred break in English billiards by potting 14 reds, playing a few cannons and a couple of in-offs, then pots another 14 reds. And that’s all they know about billiards. There’s no way they could make a 500 break. There’s no way they could play top of the table. There’s no way they could play nursery cannons. You have to have incredible touch to control nursery cannons, using side to control the position of the balls on shots that only move the balls a centimeter or two. You have to know how to recover when you lose the white ball in top of the table. You have to know a multitude of standard shots to play losing hazards while working towards a specific goal.
My point is, English billiards has a number of mechanics and positional techniques that are different enough from other cue sports that they require very specific knowledge and experience. What do you need to know to run a bunch of balls in straight pool? Can a very skilled player play precise position? Can a very skilled player break open clusters? Of course they can. Can a skilled player realize that going into the side of the pack with a bunch of draw is going to pull the cueball back to the headstring away from the pack? Of course they can.
Can a very skilled player knock in 500+ whenever they want? Of course they can’t, and neither could Mosconi or Schmidt because as you stated, it requires time. Not only that, it requires a certain amount of luck. And of course, it requires positional skill and potting skill, something all top players have. What all top players don’t have is time, and when they do, they’ll also need a run of the balls.
There’s no mysterious 14.1 knowledge stopping a skilled player from knocking in huge runs.