This is so wrong in alot of ways.
You're wrong in many ways, first being that "alot" isn't a word.
Yo can not penetrate the surface of the CB. The surface is solid. The only way to penetrate it would be to use a drill.
It was a figure of speech, which is why he put it in quotes.
If you don't follow through, you do not get spin nor real accurate speed control. I watch alot of 3 cushion and there is no way without follow through they can do the stuff they do.
He wasn't saying not to follow through, he was correctly saying that the cue ball isn't affected by your followthrough. What you do after contact with the cue ball doesn't matter in the slightest. The purpose of a natural followthrough is that you allow the stroke to be natural instead of either forcing it to stop immediately after contact or forcing it to follow after contact. Forcing, in either case, tends to throw off your alignment or speed. You allow for a natural followthrough to keep your shot in line.
And the stroke is not a swing but a push from a cocked position.
The forearm swings, like a pendulum, from the elbow. You're swinging your hand, which happens to be holding the cue, so you're swinging the cue. Again, the purpose of the phrasing is to allow a smooth and natural stroke, because tension in the stroke tends to throw off alignment and speed.
The stroke is like using a bow on a violin, not a baseball bat or a golf club that you swing. You have to use the bow in a variety of ways to produce the sound you want. Same with your stroke.
No, really, it's more like a bat or a golf club. The bow is stroked across the strings with constant pressure but varying speeds and angles. The bat or club (or cue) starts from a resting position, moves into a backswing (shorter backswing, usually, with the baseball bat but it still swings back), and whips forward into the shot/swing/stroke. The purpose of the swing/shot/stroke is to achieve perfect speed and alignment at the moment of impact, and every player has a different method for ensuring that alignment. Every baseball player has a different stance, every golfer has slight variations to the club path, and every pool player has his or her own variations to the same mechanics.
Further into the comparison, golfers practice the same basic swing to set their fundamental stroke, i.e., perfect lie with perfect stance. Pool players do the same thing. Frequently, just like golfers, we're faced with imperfect position, e.g., shooting over a ball, off a rail, not enough room for a natural followthrough, so we change some of the specifics of the stroke at that time, but because we have a foundation stroke, we know what we need to change to meet the needs of the current shot.
I am so glad I have never gotten a lesson, especially from a few of the "instructors" on here.
So everything you've learned in pool, you've acquired on your own? Nobody ever showed you how to stand, how to hit, how to stroke, nothing? Wow. I'm impressed. Totally. You do realize every time someone else is at the table is a lesson, right?
Have fun with your life.