IF you want to educate yourself before making claims about currency I advise you to read here:
https://www.investopedia.com/terms/c/currency.aspCurrency is a medium of exchange for goods and services.
Meaning there is no benefit in a currency before you exchange it meaning you get new people in the system.
A key characteristic of modern money is that it is uniformly worthless in itself.
It is the same for Bitcoin, Dollar, Euro etc.
The exchange rate is the current value of any currency in exchange for another currency.
Meaning the value of bitcoin is quite high even if you do not believe it. The value is derived from the amount of people that want to enter the system.
Medium of exchange is something that benefits people otherwise it wouldn't become such a medium.
Modern money is still something that benefits people. Those who define modern money as intrinsically worthless, are clueless of what money is. Because, it is the evidence of money what is intrinsically worthless. Evidence of money is data about quantity and name. Those are written digitally or on paper as a dozen of alphanumeric symbols - which are indeed intrinsically worthless. Modern money is for e.g. debt. Evidence of that debt are alphanumeric symbols written on bank deposit accounts or banknots. These are intrinsically worthless. But debt itself is valuable because it provides benefit to people when it is paid, as I have shown many times in this topic.
Alphanumeric symbols in the bitcoin system create the illusion of money. They are supposed to trick people into believing that there's something valuable in the system. But of course, that's not the case. That's why not a single human being on this planet is able to benefit within the bitcoin system. This system is simply a means to trick people out of their valuable things. An of course as such, it is beneficial to scammers. Or to those that were tricked into the system and are now desperate to run out of it.
If you think you are smarter than everyone else then I can't help you. These are official definitions and you can fight them as you want, it will still not change that you are wrong.