This just sounds like Orbot in VPN mode, which we already have from The Guardian Project.
Am I missing something here? Is this going to be better or different?
Edit: this article is weird, trying to sell VPN affiliates but acting like Tor VPN isn't available yet. But it is:
https://support.torproject.org/tor-vpn/
Edit 2: you can't run Orbot in Advanced mode over TorVPN, for those apps that you already configured to only connect to a specific proxy port over 127.0.0.1. No Tor over Tor. Would have been funny if it worked though.