Good article from a self-proclaimed fan, that I agree with:
Title: The Last Jedi was more a finale than a middle act. That’s not good for Episode 9.
I really get the sense from TLJ, that RJ made the film he wanted to make, and didn’t really care that it was supposed to be part of a greater narrative both in terms of the saga, and in terms of the third trilogy. He’s resolved pretty much every story thread that was set up by TFA, and has provided very little connective tissue to the rest of the saga, or setups for future installments. Much of the hype for TLJ was based on fans speculating about the outcome for setups of TFA, and how it will connect to the characters and the rest of the saga. RJ has effectively killed that in my view, which I think is a shame.