I can definitely see why the maphack thing would be an issue generally, but in the case of a broadcast esports competition is it so significant? They seem to have put an awful lot of engineering effort into their special lag system for this tournament, so I assume they at least have some pretty decent budget. So, presumably they could create a special client (possibly even sending the competitors locked down hardware). This seems like it would let them do some things we'd normally consider impossible or 'magic' -- assume both sides of the pipes are going to tell you the truth about everything...
There are pretty regular esports scandals involving cheating. Heck, we've seen players bring their cheats in via special drivers embedded in their peripherals (which is why almost every serious in-person tournament provides peripherals + PC and does not allow the player access to them outside of supervision).
