Basketball FRVR was one of the first games released. They were on the closed beta, built with other SDKs than we use now.
But when I play the game now, I cannot verify your screenshots. When I test the game now on both my android and iphone, they use the built in Invite-functionality. Where you can send invite to your friends.
And that function can also you use.
You're wrong, I've had the opportunity to confirm with FRVR and they using the current version of API v6.0+ in all their games, this version does not include this UI by default, so they built custom designed interface, creating a interface visually similar to the one used by the API in its versions 3.0.
And if you can check, if you play this game or other games published by FRVR or other developers you will realize that if this functionality is implemented in their game, these captures with current.