Instant Bitcoin remittances are available to those not having a bank account, and the commissions are minimal if compared to most popular money transfer services.
It would help if we could know what the commissions are. The article doesn't specify it.
A percentage number is always useful, to get an idea.
There is no real reason to need to use their service to send money back "home" via bitcoin. All you need to do is buy bitcoin on an exchange then send it to an address that a family member controls in their home country then the family member can sell the bitcoin on an exchange and/or use it to buy goods/services