Some people wouldn't have been found in the situation they were if they had know the best ways to safe and keep their wallet within their own control than using a custodial means to store their asset, we have seen series of event that led to the ways of how people have lost their crypto asset either due to scam or using a custodial means of storage like the exchanges, that is why we need exposure of various kinds of wallet and know the best ones for use.
What you are saying is called knowledge. Information, knowledge and resources are public, anyone can access them and learn how to improve the security of their wallets without having great technical knowledge. The problem, as I've said several times, is that people don't want to learn, people don't want to "waste time" learning how to backup their private keys when they can do it somewhere else by pressing a simple button, and this is just one example, there are many more, and there will be more as many new investors believe they have it all thanks to exchanges and centralized wallets.
Unfortunately this is not going to change, as the percentage of people willing to “waste their time” is very small compared to the constant bombardment of exchanges and centralized services that are available. When we talk about our funds, convenience shouldn't play a big role; In fact, it should be the last thing we should think about.