If I said "Sherlock Holmes does not exist" would you give me all this argument or would you understand and agree immediately?
This is the sense in which Bitcoin does not exist.
Yes, there are words on a page. There are books and films about Sherlock Holmes. There are even electrons in computer memory with a pattern that corresponds in some way to the name or character or concept of "Sherlock Holmes". But obviously he does not exist.
It is the same with Bitcoins.