I'm not sure about live chess, but there is a feature on the site where you can play against a computer. (In the "Play" menu, there is "Vs. Computer"). In that mode, you are playing against an actual computer opponent.
People get upset when their opponent uses a computer in live chess, and they rightfully call it cheating, but in this other mode the opponent actually is a real computer. If that's not cheating against the human player then I don't know what is, and I am shocked that chess.com would shamelessly endorse such mischief.
Are there "people" playing Live Chess that are actually computers?