There are lots of cases of good guys, and bad guys, staying in the fight after being hit, even with major caliber rounds.
Depends on the training and motivation of the person being hit.
Thousands of combat reports of Taliban fighters being hit by the M855 round (a .22 technically, but a bit more punch than a .22LR) and staying in the fight. One of the Army's big issues with the M855 round is that it goes right through a person and often doesn't take them out of the fight.
If you weren't able to find a case where a person continued the fight after being hit, then you're not looking in the right places. There are thousands of combat cases alone.
I recommend the book, "No Second Place Winner" by the legendary bill Jordan. He discussed this very topic.
Finally, where did I ever say that shot placement and training DON'T matter? Of course they do, I've even said so in this thread. You should chose your weapon based on what you are able to handle. For me, I have no problem with the 10mm...I really like that round, and my Glock 20 (10mm) is very accurate. But that pistol isn't for everyone. My wife shoots her Beretta 92 very well (multiple times qualifying expert in the USN). So, for her, a good 9mm defensive round (Speer Gold Dots) in the Beretta is the right match.
A .22 beats harsh language...but it's not an effective round in combat. If that's all you can shoot accurately, well, OK, your limitations define what you can effectively employ, but let's not fool ourselves into thinking that a .22 is in the same league as other calibers.