Earlier quoted context omitted.
Maybe, but you shouldn't underestimate the popularity of mobile banking/money transfer apps in East Africa. If it's easier and more secure (against literal telecom hacks, we don't need to get into crypto debates) than the alternative it very plausibly can get users.
That is an argument against it. If they already solved the problem with mobile payments adding blockchain to the mix doesnt add any value.
Many people appreciate payments the state cannot arbitrarily censor. Blockchains are good at this.