Same thing as stall fighting 100 feet off the ground. I don;t think that was part of WWII pilot training.
True, but you are talking about an accidental stall vs intentionally stall fighting at that altitude. In either case, there is only so far simulation can go.
While I agree flight models can only be "so true" to reality, you're confusing PRACTICE (I mean how something is used, not "practice makes perfect") with POTENTIAL (I mean physics allows it).
The soviets pretty much earned half their kills at treetop levels. I know many others did too.
And then there's always the story of Ta152s and Tempests stall fighting over the trees at the end of the war, the Ta152 pushing the Tempest to turn tighter and tighter until he snap stalled and crashed without time to recover because they were so low.
So while I agree with the general comment, I disagree with the notions behind it.