I wonder what kind of malicious activity could be targetting that website?! Run of the mill scans?

What would the supposed benefit be?

BTW the “special case for looping endings” I think you’re talking about is to do with drawing by 3-fold repetition or the 50 move rule.

Their opponent could prolong the game by playing bad moves, too, but why would they? Once their opponent has mentally given up the game, making extra moves isn’t physically or mentally exhausting.