It's wrong. The exact details of bitcoin aren't the right thing for it, but there are many cryptocurrencies that are more like m-pesa in their use requiremnts than they are bitcoin.
M-Pesa would not have succeeded in helping the unbanked if people living in remote villages needed to set up a mining rig or navigate to Coinbase.com and enter debit card details to obtain it. There'd be no reliable way for most unbanked people to get it or get rid of it. And since the unbanked world needs the network of regulated agents offering cash conversion and really can't afford for their assets to be backed by speculator optimism rather than legal tender in a trusted party's bank account or vault, there's really not much advantage in building that trusted centralised entity's database in something as computationally expensive as a blockchain. Certainly it's not lack of blockchain technology that's been the obstacle to people from creating more electronic money transfer service for the unbanked.
Not really, if you read what you replied to it says that none of the unbanked have cards to buy it with, and that they don't need to be risking what little they have on "unregulated, complicated and easily stolen intangible financial assets which wealthy foreigners invented to print themselves money."
That doesn't describe M-Pesa, but it does describe cryptocurrency.
m-pesa isn't a cryptocurrency in the same mold that bitcoin is, but it's electronic money for the unbanked that you're arguing can't exist.