Southside.
You are absolutely clueless. The Spams lose helis because they are shot down by flying IN the threat band for EVERYTHING, not because they're at low level... because they're NOT at low level.
Our helis try and fly BELOW the threat band for everything they can. And, generally, it works.
It's people like you who think tactics are little white mints.
In my career, I've lost arond 12 colleagues in flying related accidents. NOT ONE, count them, has died as a direct (or indirect) result of low flying.
Luck? Maybe.
Because we're practiced and current. More than likely. If you can go at FL nosebleed and warp-factor snot, then all fine and dandy. For us rotary mates who can't, then LL flying is THE ONLY way, apart from technical wizardry, we can avoid being shot down.
Low flying in helicopters has a very low attrition rate because we practice it regularly. Stop that practice, apart from pre-op training, and I'd put money on it increasing...