<<Where is the "substantial and irreparable harm?>>
By definition, an injunction seeks to prevent FUTURE irreparable harm. I'm not a litigator, but believe an element of irreparable harm is that the harm is "imminent" hence the various citations to statements suggesting approval and launch are expected to happen soon.
As to your claim, MNTA has not a shred of proof, how do you know what proof they have or what may be found in discovery, should the judge permit discovery? They are not required to set forth all of their evidence in their complaint.