Yes, those are both solved problems. The blades do not in fact "break a lot" in the first place, and manufacturers can recycle old blades at the end of their lifespan into materials for new blades. See for example https://www.reuters.com/business/sustainable-business/end-wi..., which you could easily have found with a single google search.

Let’s say your an aluminum refinery. Would you rather process these propellers or raw ore?