No it's not referral earnings.
The referral earnings say referral payout next to them EVERY TIME.

He's using a proxy and hitting faucetworld with the same btc address over and over again. Look at the time between his claims. Faucetworld is like once an hour claims.. He's claimed sometimes twice in the same minute.. It's a bot for sure and it's doing very well.. I looked at it's history, already over 1 BTC and it's rates of gain have increased dramatically.