.. by a small amount, yes. Communication is valuable to people. Having a better alternative to SMS is evidently something people prefer, however slightly.
Agreed communication is valuable, but there are many options available. Just when I see "improving lives" I think of say clean drinking water in parts of Africa that don't have it.
Yeah I am being pedantic, but sometimes I get annoyed at how much these tech companies big themselves up when in the big scheme of human things they are largely irrelevant.