Just a little chlorine in the eagle gene pool. I’m sure the smart eagles stay way the hell away from a 3 ton whirling blade assembly.
The problem is the learning curve doesn't allow for many lessons prior to death. It is difficult for a bird brain to recognize the danger until there is a very near miss.
Birds get near tall objects with wavy branches on a regular basis.
I think it would be similar to expect the big birds to learn it is okay to sit on a bare power line, but it is not okay to stretch your wings or defecate in a way that makes contact with second line.