MOD can expose its "network" via USB and bluetooth, not wifi. That's correct.
When using a computer you can use the wifi to transfer contents from the internet into the MOD.
That's how updates and plugins are installed.
It's something like:
Wifi/Ethernet => Web browser => MOD "ethernet" => MOD
I put MOD "ethernet" in quotes because it doesn't really expose an internet connection, just a way to access a local page inside of it.