A friend of mine was of the opinion that the government cannot put an end to Bitcoin because it unfortunately cannot be traced to a particular person or organization which could be sued for bringing about the currency or Blockchain.
If this is true does it mean that the identification of Satoshi as a person or organization will pose a treat to the existence of Bitcoin or otherwise
Identification of Satoshi will not pose threat to bitcoin ecosystem. It's decentralised for a reason. Bitcoin is not controlled by any central authority so the ecosystem cannot be destroyed by a government unless a global consensus is reached.
Identification of Satoshi will become a threat to his own life. I am sure Satoshi understands that very well and that's why he has successfully stayed out of the praying eyes of enforcement agencies.