It's so true and it makes me smile.
Bitcoin is indeed the main source for knowing cryptocurrency, this estimate is for ordinary people who don't know Bitcoin.
Even now, where I live, there are still people who don't know the word "Bitcoin" and this is so very funny , considering the current Bitcoin price has passed the price of 23,000 USD.
If I had invested even at this price of $23,000 I would be very happy by now with the current price in the market, but yet at the price of $35,000 which I bought a little fraction, I have made a little profit so far. So, people that does not know about bitcoin yet are those who does not have much time with the internet. Every person in the internet must have heard of bitcoin even though they have not yet made investment. Few of my guys who are trading forex, they are not trading on crypto, not having the knowledge of bitcoin or cryptocurrencies. Its just with time, they will all get in into the system, just that it should not be when the price has touched or gone above $100,000, cause that will be too late.