KLM have definitely become the Rules airline. No usage of power banks. No photography on board. No drinking of alcohol not supplied by KLM. No charging your phone from the seat while taxiing. All on top of the normal stuff.

So very reassuring.

Coming back to the powerbank ban thing - this video gives a really good overview of the issue. https://www.youtube.com/watch?v=FDUzI8UMJUw
Airlines are banning power banks (but it kinda makes sense)

YouTube