It never died but just announced done by some people. There's been a preconceived notion about BTC which is rather nonexistent to anyone actually following it, The sudden collapses and rises in price are rarely effective.
If the bitcoin dies, it will resurrect again as it is in active development. Its weakness can be repaired.
bitcoin's open source nature means that it can indeed be developed throughout the years to make it future proof, but since the beginning of bitcoin there is no one that succeeded in cracking it. and i'm quite sure that it will stay like this for many more years. the only weakness of bitcoin is the internet and the power that miners and node runners need. as long as these 2 aspects are working, bitcoin will never die.