Just like people who lose funds in a collapsed centralized exchange and still leave some of their funds in another centralized exchange, because that one hasn't collapsed yet, it is crazy to think, but a lot of people do this.

There would always be people who would still make the wrong decision despite numerous warnings they have heard. Not your keys, not your coins, they still store funds in centralized exchanges, anything that is too good to be true is probably a scam, they still join ponzi schemes, etc.