I remember when it was common for ice dance women to wear a longer skirt than singles skaters or pairs. But not THAT long. Since both these costumes are coming out of the same training center, I speculate that someone there has a thing for these skirts.
At least with Madi's, she is using it as a cape and it is part of the dance and movement. It's still too long. But it also has a point. I don't see the point with the other long skirts. The program would work just as well without them.
And speaking of costumes that bug... why are F-B/Ciz wearing costumes that remind us of the ocean? They do realize that the movie The Whale is not literally about whales, right?