I am glad there is a second thread, I know very little about the RF and have learnt a lot - thank you.
My thoughts are that if the Queen does not in some way sanction PA (I would say irrespective of the court case with effect from tomorrow but if she waits for the outcome of that I guess that is understandable) she sets a very dangerous precedent for the RF and it sends all the wrong messages to others about how they can behave and what they can get away with. Maybe she is still working on the "never apologise never explain" principle but whatever people said about "nothing has changed in society" on the other thread - perhaps the public will not buy that any more?
For example - however unlikely (or not? what do I know) if Prince William was caught using young prostitutes in the future, the Queen's silence now will just exacerbate the damage to the RF at that future juncture.
I think the Queen's final actions will actually be remembered and quoted down the years and that is what will really stick, for better or (more likely) for worse.
On a totally separate level, there will be millions of men out there throughout the classes who will look at Prince Andrew and the way he has "got away" with it and will use that as a role model for their own duplicitious and immoral behaviour.
And not just at the Boris Johnson level - all the way throughout the social classes. It is just another "pat on the back" for immorality, cheating and abusing other people throughout society. As sanctioned by the Crown (however much they might want people to continue with the "do-as-i-say-not-as-i-do" mentality)