After thousands of rounds shooting sporting clays and five stand I have encountered many hangups. While the percentage is low the reality of a FTF exists and therefore cannot be discounted.
Nothing can be discounted, true. But if one is developing a standard technique based on a malfunction, I would submit that the problem behind the malfunction should be addressed. Fighting weapons should be as reliable as possible. My 870 is fairly stock, and with over several thousand rounds of fighting-type ammo it has had one feeding problem over the years. My Beretta 1201 much the same. It did develop a glitch, but went right back to the factory for repair.