All systems use numbers to express the quantity of shares in a system that someone bought. But in the bitcoin system these shares are worthless because their holders are unable to return their investments from the system that issued them.
I am still not sure whether you truly don't understand or if you are just pretending. Bitcoin is not a system of "shares" like in traditional stock markets. Why do you keep comparing them?
To put it simply, Bitcoin is merely a method of transferring value between two parties. P2P type of payment system. There is no issuer of shares or company in which you invested funds when you exchange fiat currency for cryptocurrency. You simply exchanged one currency for another while, at the same time, someone else did the same in the opposite direction. That is it!
You don't get it, do you? Whatever you say about bitcoin it won't change the fact that people cannot get anything from the bitcoin system when holding the record of how many shares in this system they have. People invested in this system, got the records or evidences of their investments, and then they are able to return their investments only if someone buys theit records. So, the system is completely worthless. That what you call bitcoin is just the name for one share in that system. Just like one share in US dollar system is called a dollar. When people invest in the US dollar system and hold dollars - shares in that system, it is this system thar returns them their investments. Either through goods, services or labor of the borrowers or theit collaterals if they default on their loans. The bitcoin system is a scam. And your writing is just the marketing for that scam.