This just fosters the idea that women in general have nothing to add to anything unless a male character is interested in them sexually or "romantically." We cant ever just have someone show up who does interesting things and just happens to be female, nope - they have to do girly/annoying things and be stereotypically just all that girl stuff.
When do we get more people like Ripley, who did interesting things and just happened to be a woman? Really, all this is very retro in the sense that we have GOT to keep up this "[slur edited out]" stereotype at any cost, including cost to the story.
I did not see these sisters in CW, but they were annoying enough in Batch. Girls in a "car" bickering as they drive to the mall, right? I do remember seeing .gifs of even Ahsoka, queen of Annoying Girliness appearing to be annoyed/impatient with them. Perhaps I'm remembering wrong. Jeez, just stop it disney.