People love symmetry. Especially people named Wes Anderson.
The filmmaker's characters and props are constantly shown smack-dab in the center of a frame, as this awesome supercut, from Korean filmmaker Kogonada, proves.
Social scientists have done studies showing that people find symmetrical faces and bodies more beautiful than their non-symmetrical counterparts. So maybe that is what it's all about. Or maybe Anderson is just kind of a sociopath.