I don't think anyone is flipping rounds in the air to look cool, it's a fast/efficient way to clear the gun and retain the round
I did not know that you are on the clock clearing your pistol !!! Turn the gun over, ejection port down and let the round fall to the ground, after you holstered and range is declared safe, pick your round up. You have just lost 5 to 10 seconds of your life by not being efficient, but you and the RO still have your vision, motor skills in your hands, etc. You have spent thousands in your equipment, ammo, travel, match fees, time, etc. One round lost in the grass is not worth it because the round was not "retained". I would not want to see any shooter or RO get hurt, and I truly believe that you would not want it either.
Do you have any actual reason to believe that anyone has been or ever would be hurt by catching a round? I don't.
I have seen inexperienced shooters muzzle themselves attempting this- but that doesn't stop me from doing it.