nice video. i am just glad that my g17 was test fired in 09'. i also have a fall 12' gen4 g23 with about 2k through it. the g23 ejects just fine. it is weird that you dont get a gradual change in ejection. fine through one mag, and crap in the next and on.
also, there is nothing wrong with wearing gloves. i wear my issued oakley fr's at the range all of the time. its comfortable for me, so i wear them. your form looks fine. youre not 'breaking' your wrist. it is simply a problem with the production of your g17. tiro is a tool, and its best to ignore him.
Light a fire for a man, you keep him warm for a day. Light a man on fire, you keep him warm for the rest of his life.