Maybe I'm off but being disqualified from a battle, wouldn't that in effect mean they are disqualified from the tournament, even if they are still able to finish it? What's the big deal if they can continue even though they would technically now be playing for nothing?
Not to mention, removing a team because of being disqualified may require to rework the schedule. It would be easier to leave them in. If they continue to cheat, then hopefully they will get reported more. Plus, at the end of the tournament, if WG is inclined to, could dish out punishments to the actual players, not just the teams. The more proof they have, the easier to back any type of disciplinary action. Just having one group complain has less effect than having multiple unrelated groups.
Just a thought.
Oh, and with how the captain must send in disputes quickly, less chance for then to manipulate the data to look like the other team was cheating. And with each dispute going over a battle, they have time to review the data before making a judgement. No need to do so ASAP.
I did try to glance over the rules. Didn't find anything newer on the despite review timeline but just because the one post is four years old or so does not mean it's not in effect. The fact that it was not edited or removed makes it sound like that's still active.