Why not just wait until you get the additional information?
Because I don’t necessarily trust that I would be getting the full story. I wanted to see if other parents knew what it was about. My son has been in what I think is a pretty good school. No “progressive” shenanigans, save one: I volunteered to help out to take the kids on an outing. It was a play. Turned out the play had a VERY aggressive socialist message to it. Something about a merchant who sold blankets and learned that it was much better if he gave his blankets away rather than sell them. I was not happy. If I had known the subject and story line of the play my child would not have attended.