1- Unreal. Has any type got such a device to warn of your 'unstable approaches'
No, but given the wealth of real time information collected in the modern digital cockpit it ought to be a trivial task to design and implement such a device. And if crews are going to fall asleep while monitoring the automation on a regular basis then it looks like we may need to.
2- big words from a light plane driver who is not Boeing trained, has no real comprehension of the system, and knows better than several hundred experienced Boeing developers! Pardon me, but how can you judge?
Irrelevant brow beating.
Nobody wants the crew to swing, they're dead. Killed because their flying was pants.
But some people seem to want to see their broken bodies strung up on public display nonetheless.
Where else lies the blame?
See, there's your problem right there. This whole discussion shouldn't be focused on assigning blame. The professional approach ought to be based on determining what happened and why, so that we can hopefully learn the right lessons and debate solutions that may help to prevent something similar happening in the future. Anything less is mere venting.