I did, read the whole thing. I think I pretty much get it but I thought perhaps the encryption aspect combined with the VPN giving you a masked IP address would make it hard for big brother to locate and identify your specific phone on the network so they could control the mic and camera. Likewise, the Vault 7 disclosure indicates the CIA uses your phone to geo locate you and I'm not clear if this means they are using features of Android/iOS to accomplish this or hacking your cellular provider's signal to trace the location of your particular phone.
think of it in terms of what would happen if you used a vpn service and connected to bellgab through it. the bellgab server would still be entirely capable of communicating with you as an end client and you'd have all of the functionality you'd expect. the only thing the vpn would do is 1) fool the bellgab server into thinking the vpn's ip address is your ip address and 2) prevent a man in the middle (your ISP or employer) from seeing what you're doing. item 2 is where the encryption comes in.
but again, the end service you're accessing would still function as intended. knowing this, you could think of the spying intel agency's audio snooping as the end service which would continue to work fine. they wouldn't see your ip address, but if they've managed to turn on your mic and spy on you, they've probably also managed to make your phone report its true ip address and even its phone number.