People who bring this up are almost always people who have never lived anywhere near real poverty or conflict. Barring individual cases, the vast majority of the world's less privileged have neither the means nor the knowledge to buy crypto in any shape
The hard part is not adoption within poverty-stricken nations, rather adoption in developed nations with complicated tax codes and lack of incentives for merchants to invest in more payment processing tech is the true challenge ahead.
My country - India - has the world's largest number of poor. Even if these people were to get smartphones, there are already deeply entrenched players (PayTM, Google Pay) who offer free and instant transactions.
This is true for a lot of African countries as well. No reason for anyone to use a new currency when there's already M-Pesa and UPI and PayTM that use the currency they already know and trust.
There are a lot of people in the world that live in places where the law is far more gone than "misguided." For these people, it's not a question of "whether" to side-step the law but "how." You may not care, but they do.