And how experienced are the CAF at fighting Russians these days?
I'm not really sure what you think you're asking here. Do the CAF know as much as the Ukranians do about fighting Russians? Yes, absolutely, because we continue to actively train them, and as a part of that training we directly learn from all of their experience on the ground. The CAF know exactly as much about fighting Russians as the Ukranians do because that's one of the huge benefits of closely supporting Ukraine the way they do. The CAF make a point of knowing exactly how Russians fight, and they train against Russia as a simulated adversary very extensively. Remember, Canada effectively shares a border with Russia, they're considered the number one potential threat by the Canadian military.
Regarding everything else you said... Again, I'm really not sure what point you think you're trying to make here. Do we know for sure whether or not war crimes are happening? No, of course not. I said as much myself.
Literally, me, a couple of comments back:
Could there be war crimes happening? Sure, no one is going to deny that. Killing of POWs happens in every conflict, and it would be exceptionally unsurprising in this one.
So if your argument is "War crimes could be happening, we just don't know" then yes, well done, thank you for repeating my point back to me.
What I challenged you on was that assertion that the POW numbers - if accurate - could only mean that war crimes are happening. The people with actual experience and knowledge of modern warfare found there to be absolutely nothing anomalous about those numbers. So if you're looking for evidence of war crimes, you haven't found it here.