So it saves those teams money and room nights.
If you just came for the B worlds then I agree that is a bummer.
Also room nights are calculated by a formula of the number of teams entered in each tournament so any extra nights teams are there and not in a tournament wouldn’t count for anything.
I would make it known in the managers meeting that you want the B on its own weekend if that is what you are saying.
Constructive feedback is what is needed.
Most airlines have free change fees because of covid and hotels can be cancelled at no cost.