Equally bewildered as there is no real upside to this and the other folks on the line dont have any purpose of knowing prestrike information.
I am not as educated in these manners but this type of information seems to be of the type you don’t text on commercial applications and would be on a need to know basis. Maybe you can communicate the idea that something is planned to happen but not timelines of the specific assets.
I was surprised Hegseth even desired a side channel that had the potential downside that he could accidentally text the coordinates of a carrier. Stuff like that gets Generals relieved immediately.