For what it's worth, I agree with him. When I saw the movie and even just the promotional materials I thought it was visually striking and had very strong color themes. But wow, it was a train wreck in terms of plot, characters, faithfulness to the series, etc. I could go on for hours.
But to be fair, I also think The Force Awakens was terrible and painted the story into a dumb direction. Instead of “what if the Nazis came back to power in Argentina”, they should have moved the story into a direction more like “the alliance against a common enemy is fractured”, like what actually happened after World War 2, or “there are now many factions of ambitious warlords rising among the widely deployed and still incredibly powerful imperial military”, or some of both. The Mandalorian did the setting much better in that sense.
Look on the bright side, it could have been 2 Death Stars and a whole bunch of bad space boobs jokes.