Are you sure you're not just looking at the change address functionality?
So with bitcoin... you have 20 unspent, you send 5 btc to person B..... you as person A are actually sending your 20btc... however,
15 btc comes back as change from person B to your change address... usually this address is held in the same wallet as addy of the unspent 20btc
so it is a key in the keypool of the same wallet under control of the same person or project owner... this doesn't mean they are paying themselves ...
this is how this coins works if it is modeled on doge or bitcoin etc
so.... the airdrop would seem to be splitting like you said 10 your you 10 for me. for each airdrop run I'm guessing/
someone correct me if that isn't a possibility

this is why satoshi nakamoto white papered bitcoin as 'digital CASH' not 'electronic money'... because ...when you go to the shops and buy a lollipop with your 20 dollar note... you don't get your same 20 dollar note back but you also don't punch out the clerk, because you get a whole bunch of change back.
change addresses are vital and change protocol for maintaining anonymity.
because is person A paying person B or is person B paying person C(change), is A C or is A B and C.. or is A just A?
