I'm a former motocross and enduro racer too. (Still ride recreationally.) The biggest transition for me on MTBs has been clipless pedals. They're hugely beneficial climbing and pedalling bumpy conditions, but when things get really loose, I have decades of muscle memory that say PUT YOUR FOOT OUT and I couldn't do it on instinct alone. Eventually I had to just leave the platforms at home and ride clipped in, even if it meant a few crashes. (Which it did... and still does.)

This is on Kansas trails, no DH. If I had the opportunity to ride DH, I could see myself still preferring platforms.