Also even if the moderator made that particular decision alone, he will not have to stand up for it as an individual if it gets challenged. Any sensible organization will back him up as long as he acted in good faith and did not break some basic rules. He is, at all times (except when not acting as a moderator), representing a larger entity.

(They might of course still have an internal disagreement over an issue, and maybe take internal action for bad decisions, and might overthrow that decision if warranted, but not by blaming it on one individual.)