When Bitcoin was created, the word "cryptocurrency" didn't exist. In fact it wouldn't exist for quite some time until people started creating modified copies of Bitcoin. That's when the need for a more general term arouse.
Originally "cryptocurrency" was defined as a currency that exists on a decentralized network of computers. But there are many cryptocurrencies that are not decentralized, and yet no one is bothered by this fact, despite their centralization defeating the whole purpose of cryptocurrency. This is because most people in crypto community only come here for high risk high reward trading and not actually to use cryptocurrency.
Crypto ecosystem is so toxic and useless that we might as well abandon it and say that Bitcoin is what Satoshi described it - a peer to peer digital currency.
now I understand with your good and reasonable explanation, I thank you.