I don't like its default look, but the screenshot they linked was non-default and what I do like, so I'm wondering why they find it sloppy/bad. Perhaps they would like Gimp's default more? Here's a representative shot from 2020: https://www.lifewire.com/thmb/H9QCFUVFrU035srbCoZ5erwS20Q=/1... Not even the +/- buttons another comment complains about are in this one.