Exactly. In my experience the people who ignore this are the same people who never even understood bitcoin. They just saw something that goes up and thought they could make a lot of profit by investing in it. These are the same people who panic sell every time there is a FUD out.
Nothing limits anyone from learning about self-custody, and why they chose to hold their Bitcoin in a centralized exchange. They've been covering laziness in researching, with ignorance, which has been a major problem for people who have became victims.
We no longer live in the Stone Age. I ask my browser how I can buy and store Bitcoin, even the information on it wasn't ignorant enough to refer me to the use of centralized exchanges to store Bitcoin, people refuse to learn, not a problem of ignorance, informations are not limited, they are everywhere.