The reason people are being quiet about this change is because they've found workarounds (like piling onto Primal instead of Aether). The fact that Aether is closed does nothing but hurt RP venues on Aether and make it difficult for folks to visit their friends' houses. The only feasible solution to the problem of players piling onto one DC to run their content would be to open a cross-DC party finder.

It's far too late to close DC travel altogether. People have moved servers to do things like get housing with the promise that they could still play with their friends because of DC travel. Closing it now would almost certainly cause massive player dissatisfaction. SE has to work with what they've got.