No, he's saying that you don't seem to understand the technology, because you only are talking about the names of the coins, which is of little importance compared to the implementation.
Sorry you've lost me. How do you differentiate between blockchains if not at least by name? How will a merchant know which currencies to accept if they have no names? When I'm trading Bitcoin for Litecoin, am I just trading the same thing for itself?
> How do you differentiate between blockchains if not at least by name?
By validating the blocks against the rules you've chosen and choosing the longest valid blockchain.
> How will a merchant know which currencies to accept if they have no names?
By choosing the blockchain they agree with the rules of.
> When I'm trading Bitcoin for Litecoin, am I just trading the same thing for itself?
No, but the name isn't the important difference. The important difference is that Bitcoin proof of work uses SHA while Litecoin proof of work uses Scrypt, so the blocks of one don't validate under the rules of the other.