For the unbanked and underbanked, definitely yes!
This is one area that Bill Gates has mentioned Crypto can actually benefit.
Well if they're not unbanked by choice, chances are they don't have the means to afford electronic devices let alone internet/data. The fact that Bitcoin is dependent on technology definitely makes it harder for poorer countries to really embrace it.
Also, feature phones without the ability to install apps are more common than smart phones in poor countries so something like Bitcoin payments via SMS would be easier to integrate into the existing infrastructure I think.
I look on the other aspects, in our country, most of the people are living in poverty because I am living in a 3rd world country as classified, there are people who works abroad or out of the country because they offer great pay but the remittance fee is very costly to them, so I guess if they will be using bitcoin that would be a great help for them.