You can play online without getting invaded, simply dont build FOB base.
I know this.
I'm saying right now if you have the game and are playing you can't login to the online portions of the game. Servers aren't up yet.
At least not on Xbox One.
Anytime I've tried to use any of the online features I'm greeted with a nice error code and message stating the servers aren't up.
I'd be willing to bet that once they are up you will be able to earn MB coins just playing the base game.