At our school, the teacher gives the homework worksheet per the schedule of the curriculum, which is selected by the district.
I have teachers in my family and I try very hard to see things from their perspective. All over the countries, some teachers are super, some are terrible some in between, most are doing their best given their many restrictions.
That being said, I think a parent of a 3rd grader should be able to expect that their child has moved past using colored pencils or crayons to color in shapes to show fractions if they've been doing the same thing for the third year in a row, continuously showing 100% proficiency. It's intellectually demoralizing.
I don't blame any individual teacher, it's "the system" that myself and so many other parents are disappointed in.