Mate, it is not similar to BTC/BCC. BTC/BCC creates new coins in each new block (genesis tx/block). So if BTC forks, two new chains (BTC) + (BCC) have both ability to create new coins in each consecutive block.

XRB had all coins already created in genesis block, they were under control of the dev (Collin) and were distributed gradually to the faucet, through which XRB was distributed. So - if all remaining XRB coins are still under control of Collin, then no one other than Collin can continue XRB distribution via faucet. Ergo, unless Collin gave control of XRB to @raiblockcommunity group (which wants a fork), this group simply has no more XRB to distribute. They can only create new copy of original XRB incl. new genesis block and then, they can distribute this new coin.