If someone is giving advice to Corey, I don't think that what he does with his chalk matters. The important advice for him concerns tactics: don't try to imitate what the full time snooker players do - the good ones will hang him out to dry. What he has to do if he wants to compete is mess the table up.
Snooker players like to have all the reds in a bunch down one end of the table. Then then spar with each other hiding the white up the other end of the table until one of them gets a chance to pocket a ball at distance. Corey really doesn't want to be playing that game. At the first opportunity, he should get one of the reds down the other end of the table. Then if he can hide it, he should be looking to get another red down that end as well.
That is the key to getting a really messed up table, which snooker players hate, and which will go a long way to levelling the playing field between snooker and pool players.
Don't allow them to make the game one that is played at distance. Distance is their friend.
This quote is someone who knows the game of snooker. Snooker is my primary, swing the cue more days than not. I am only on a pool table maybe once or twice a year and that is just a bar box out for a beer.
Snooker is about controlling the white and knowing what it will do and keeping a tidy table with colours on their spots. As I am in the USA, the few competitors that I get on my table actually unknowingly have a "pool attitude" toward the game (despite best efforts to understand snooker) and that results in exactly what Siz is describing. Drives me NUTS! Balls everywhere, no order to it all. I spend the vast majority of my time "sweeping up the table" and can't manage to put together much of a break at all because before I can put things back in order, inevitably, further lack of control has surely put things out again.
I don't agree with Siz though that this tactic has any chance of getting him through Q School. It is disrupting, it would win him a few frames (but it won't win him any friends), but it makes for long, tedious frames that, while his actual chance of winning the frame is increased, it still will not make him the likely winner of the match. Like Siz said, "the good ones will hang him out to dry" and if they are going to Q School, they are already pretty good at it.
I have said many times I admire what Corey is trying to do and I wish him the best in his go at it. That said, in response to the earlier "So what looks cartoonish?" question, one doesn't need look past the first twenty seconds of the video.
Something stuck with me from years and years ago that (I think it was) Cameron Smith said in a thread about CTE believe it or not. He said something like, "If a shot is on, it's on. A snooker player sees it when he is in his chair, when he is standing on the line, when he gets down on the shot." Truer words not been spoken.
Snooker is primarily a Black ball game. So when that video opened, I assumed Corey was well hooked, playing at Red ,and he had to consider how to keep Black safe as it is well in the open. And Pink is fine as well on Green spot. When Corey took so long then finally decided to attempt to pot Yellow, my eyes rolled. Surely pool players scoff at the ridiculously simple snooker roll up safety and prefer to see Corey play the "manly" shot on Yellow. But a true snooker player is actually looking to play the "manly" Black ball game and will use the roll up safety as a tactic to that proper game. If Corey's yellow had gone in, he still had nothing of significance to carry on the break. If Blue, Pink and Black had all been tied up, then the attempted pot on Yellow would have been correct (but with much better follow of course).
I am probably speaking Greek here so I will stop. But all the best to Corey in his efforts.