Yes, Glock's erratic extraction/ejection has NOTHING TO DO WITH THE SHOOTER. It's strictly a mechanical problem that's intrinsic to recently manufactured Glock 9 millimeter and, sometimes, 40 caliber pistols.
'Wisdom To One Is Foolishness To Another; But, Alas, A Fool Knows Not The Difference; And, The Road To Hell? ...... It Remains Well Trod By Those Who Should Know Better.'