Comment by netsharc
It's not like it's money from thin air, the legitimate users pay the company, and the company is being "scammed" (or whatever it is - Scam 2.0?) by these "Angels". But obviously the company realizes the whole scheme is still cheaper than employing actual bike movers.
Maybe they can change the algorithm, if an "Angel" moves a bike from a full station to an empty one, they only get rewarded if a "legitimate" user then uses their bike. Not if it's their own ass who's going to ride it back to the origin station in 15 minutes' time. But then the algo needs to ensure that the next user isn't just the Assangel's friend.