I get the sentiment, but there's no real reason to apply pressure publicly. A lot of fanbases seem somewhat divided on potentially moving, and applying pressure publicly just invites their outrage. The "B12 trying to kill the PAC" narrative has already been floated (disregard the only departures have been to the B10, and the PAC tried to kill the B12 at least twice in the past decade).
That said, if CO, AZ or others are seriously considering the move, I'm sure the B12 has been in communication about how long they have to reach a decision. As much as we'd all like to get it over with one way or another, there's no compelling reason they need to reach a decision other than time it takes to get everything in line for the 2024-25 year.