It's fair to say that The Last Jedi, despite its dark elements, is overall one of the goofier Star Wars movies, with an abundance of daft humour intended to lighten the emotional load.
Whether or not you feel it becomes excessive or not, it's hard to deny that some of the gags fall disappointingly flat, and probably should've been cut in the editing stage.
For instance, Poe's opening "on hold" gag with General Hux, Finn stumbling around in the leaking bacta suit, and Finn later telling Phasma, "Let's go chromedome!", were all more embarrassing than genuinely funny, and that's just a few examples.
Though a lot of the jokes do work, there's a disappointing abundance of one-liners and sight-gags that just don't, and are especially conspicuous on repeat viewings.