It's PAPA's decision to publish the feedback if they want to. I trust them deeply and am confident they would never make such a change lightly.
Maybe dozens of people shouldn't have sent feedback panning the format and tournament, or more people should have sent feedback saying how much they like it. Changes get made based on player feedback, they don't happen for no reason.
I wonder, if PAPA 19 had been a "normal" Circuit event and not a protected one, whether its player-feedback rating was good enough to keep it on Circuit. If not, that would be a strong signal to the organizers that the format and style should be changed.
And, just my opinion, but it's insulting to some of the best event organizers in the world when top-tier players respond to this by saying the organizers' decisions are "bullshit" or "a great shame" or "incredibly disappointing" or that the organizers should be "better than this".
Instead, we should give the organizers some time and opportunity to explain the reasoning behind the changes, and understand that they are not making these choices arbitrarily.