You may not get the right information if you do not ask the right question and the right people. Asking the wrong questions gets you answers that you do not need, asking the wrong people gets you the wrong or incomplete information.
Well your definition about ignorance might be to your own understanding but ignorance can also mean lack of understanding about certain things, one might have heard the world Bitcoin but don't know what it's all about, it's just like those people who still think and refer to every Cryptocurrency as Bitcoin, they know the word Bitcoin but don't know what it's all about.
Now what suitable word would you use to describe them if not ignorance, well at the early stages when I heard about it, it was ignorance that ruined my opportunity to invest, cause I lacked understanding about what it's all about which lead my doubts and assumptions concerning it.