Spurs have their use, but I rarely see them being used by the right rider on the right horse. If you need spurs for a horse, it is not okay to use them. But if you don’t need spurs, it’s perfectly fine to use them.
Gadgets in Horse Training
Training horses well is a skill that is learned over a long time. It is not possible to circumvent the process by taking short cuts. The behaviour that gadgets are intended to shape is something that good horse people learn along the way to becoming good horse people. A person cannot learn to be a talent with a horse by resorting to gadgets because they undermine the process of becoming a good horse person.