I’m at a loss as to why some bits that were legal since the beginning of judged dressage are no longer allowed. Being around dressage for a long time I can absolutely attest to the fact that bit is only as harsh as the hands that hold it. And having judged, you can see when a bit is overused. The other saying about a bit sometimes being like putting a razor in the hands of a monkey can be true of nearly any and every bit out on the market.
Horse’s have different likes. And many that are now off the list were never anything crazy like a double twisted wire, for crying out loud. I just have to wonder what the true deciding factors/criteria are when they rewrite the rules.