Hardfork in the blockchain is said to have occurred when the proposed amendments in protocol governing the blockchain are unacceptable to one group of developers and result in the formation of two separate blockchains.

That's very true friend. Hard forks are a result of a group of developers and other people whose vision didn't align with the upgrade proposed and this causes split opinions and different chains at the end.

From the screenshots shown above, we can see that the genesis block of both networks is identical

Yes, after hard forks the two chains will have the same genesis block, this is just like we saying that the origin still remains the same even after they went their different ways. It's good to read your entry and I wish you good luck in this contest.