I don't know about anyone else, but it's among my favorite Kurosawa movies. Other favorites, High and Low (based on an Ed McBain novel, interestingly enough) and Seven Samurai. Both films of incredible imagination.
You forgot to include the very next line in that quote!: "But in this case the error was so egregious because of what Lucas set up in the original films." The quote in its entirety undermines your selective argument.