Why “frangibles will increase reckless riding” is not a valid argument:
I don’t think helmets and safety vests have increased dangerous riding, have they?
Most riders have enough sense not to go charging at a fence with an “if I miss, it will fall and save me” attitude. (I hope.)
For the few riders who are more daredevils than they are riders, dangerous riding to frangibles will be obvious to observers, including event officials. Also, a rider will stand out statistically if they trigger the release far more often than most riders. (That stat needs to be tracked along with many others.)
Rider qualifications, disqualifications, yellow cards, pulling off course, and accountability generally is another discussion, but holding the eejits accountable does have to be implemented along with the safety technology, to make safety truly effective. Safety technology is important, but it can’t be responsible for people with no sense.
Also. Not only is “riders will be more reckless” not true of most riders, but it has nothing to do with the general need for frangibles for the majority of riders who don’t ride recklessly.
For the few eejit riders who test the limits of safety, the cure is not allowing them to kill themselves on course because we didn’t deploy frangibles to save them. Rather, hold them accountable for their excesses, if they are regularly busting the frangibles like show jumps.
The real eejits have to be pulled off the course, and if they can’t learn better, off the sport. If there is more accountability for reckless riding, and therefore less of it, then we can’t blame frangibles for increasing reckless riding. IMO