Not all people are like you or us who easily understand bitcoin, there are others who even though they read the simple meaning of bitcoin and its function, there are others who do not immediately grasp what they have read.
If they cannot understand how to send BTC, how to send or copy their receiving address to receive BTC, what wallet to use and how to keep their seed phrase, then i guess they should not use BTC, they should probably stick with fiat. It is very easy to understand the basics of BTC and for anyone who wants to use BTC, they have to put a little time and effort to learn this, if they cannot, it does not mean that learning the basics about BTC is difficult.