In one of VS Littauer's early books, he said all horses should be ridden with contact, and a horse was not in control if you did not. Decades later, he changed his view. He said "elementary control" was appropriate for a rider learning position and balance, and at that level of riding, he recommended using loose reins. He said decades of schooling students on his horses had taught him that riders trying to ride 'on contact' when they were not completely stable in their seat resulted in sour, hard-mouthed horses.
He also said that relying on loose reins indefinitely was a primitive approach and lacked finesse...which has both an element of truth and an element of error to it, depending on the horse, the tack, the rider & their goals.
If he was right, then a rider ought to be pretty comfortable in riding two-point, half-seat and full seat before asking the horse for constant contact via the bit.
I don't jump, and consider myself primarily a western rider, although my Australian-style saddle is English in origin. I ride some two-point almost every ride, which is atypical for a western rider. Although I like slack in the reins, my mare prefers contact any time she is nervous or excited - so I'm in the odd position of having my horse push me to ride with some contact even though I don't want it! Oh well...horses get a vote.
Bottom line - if you are not comfortable with the strength and steadiness of your position, two-point, half-seat and your hands, you MIGHT consider Littauer
's approach. But I'm not an instructor, a shining example of riding skill, a competitor or teacher, so you are also welcome to totally ignore this post!
If you are interested in reading his opinions: