I have read hundreds of reports where, let's say, all,perished from a loss of control/spin in, within the circuit pattern.
I've told you a million times not to exaggerate. Seriously? Hundreds? i've probably seen half a dozen. I don't claim to have read every accident report ever written, far from it, but hundreds sounds like a lot.
If you read what I wrote, it wasn't, "it's easily survivable, anyone can do it." It was, "someone who is familiar with spin recovery should be able - in any reasonable type - to detect and recover form an incipient spin in less than 500'". I then went on to say that most low time pilots, who aren't familiar with spins, will probably panic for long enough to make the fatal difference.
I experienced one incipient spin while I was training, and solo (practising power on stall recoveries). It took me a second or so to realise what was going on, and recover. At 3000' it made no difference. At pattern altitude maybe it would have.