I had hoped to get some kind of steer on this question so read with interest....suffice to say....I'm no clearer really.
Thanks for posing what I thought was at least an interesting question!
It WAS a great question.
Look at it this way:
When you flip to 12/12 a hormonal change starts occurring (not instantly, but quick) and the plant starts dedicating it's energy to flowering.
When you take away fan leaves you are taking away energy production and some stored energy.
The plant is going to compensate by growing new fan leaves.
In veg that is OK...in flower you want as much of the energy production and stored energy to go to making flowers, right?
So the argument on one side is "DO NOT DO IT!!!!!!" - because the thought is to NOT redirect energy to making more fan leaves.
MY position is this - the plant is going to keep making flowers regardless if you take a few leaves here and there to ensure light penetration to the flowers.
Flowers need light as well as the leaves...and THERE ARE LEAVES IN THE FLOWERS! Which means that the leaves in the flowers that are now getting more light are also making energy...and I am letting them have more light.
My experience has been that the flowers with more light get bigger and more dense.
Hope that helps.