Originally Posted by
coke cans and winglets
https://onemileatatime.com/american-...indow-dimmers/
"Customers sitting in the window seats enjoy watching take off, landing and even spotting landmarks from the sky. The Boeing 787 windows are larger and have unique controls for window shades. Recent feedback about customer experiences on this aircraft is that the windows are being fully dimmed and locked by flight attendants, leaving customers frustrated that they are unable to control the window features from their seat. Do not lock the window features on the Boeing 787. It’s important that each customer at a window can control their own experience." -A memo from AA to FA's saying not to lock the windows on 787s so passengers can see out if they wish in 2021.
There you have it, fly AA. Beyond that I don't see anything in the policy that says FA can't require if needed to ensure the overall cabin is happy. Just like FA shouldn't move passenger seats around. However if they have a reason, they can.