I agree wholeheartedly with the OP.
We have two choices at this junction, clean up this planet, or don't clean up this planet. If 80 % of the dirt is silently swept under a rug, then the planet will not have been cleaned! Whatever improvement there might be after a limited cleansing will be short-lived, and nothing will have been accomplished in the long run. The evil will creep back in no time.
The general public MUST be faced with the truth of what happened! The uncomfortable truth is that the general public has unwittingly given its support to evil, and will do it again if no lesson is learned.
If there is a power transition with minimum noise and life just goes on with barely anyone noticing much, then the guys who took over weren't really "good guys" after all, they were just staging a coup to benefit themselves and their friends.
I sincerely hope team Q is only being secretive for strategic reasons while sensitive operations need to be protected, and that they will open up and educate the citizens afterwards.
My prayers are for liberating this planet from evil, not just shifting power from evil to slightly less evil.