I'm not in agreement that the disney worlds were pointless, but I do agree with the general aimlessness of 3's plot.
It really did feel like they gave us a fulllength game with only like 1/10th of a plot to wrap up Xehanort.
A mi lo que me jodio de KH3 es que realmente nunca vi un punto a porque se visitaban los mundos Disney eran simplemente un tramite. En KH1 era por salvar a las princesas, en KH2 por buscar a Riku y salvar mundos de la O13, pero en KH3?