So this news make altcoins become useful because crypto meaning is was include altcoins to become useful as mode of payment.
in case you haven't read the link you posted yourself i suggest you go ahead and read its content instead of only its title. it is only talking about
bitcoin and its adoption in Africa and other places not altcoins!
Yes, that's the content of the the article but all the same, the story of cryptocurrency start with Bitcoin but it won't end with it and as the adoption of Bitcoin increases globally, it will have a positive impact on the entire industry, so it is still a good news for altcoins also.