What do you mean, is this bugged? No, it is not... Why would it be bugged?
People can fund whatever address they want for whatever reason. The people funding 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa are probably doing so to beg (since it's an address that's looked up pretty often, so they "advertise" their address) or maybe to boast, or to pay homage to satoshi...