Goldmember is not substantively worse than any of the other Austin Powers films. It follows the exact same formula, with variations of the same jokes (they even joke about the expected, inevitable “Johnson” joke). But the franchise was just running out of steam at this point and people had moved on, I guess. Made me laugh out loud a couple of times, but I wasn’t proud of having laughed.
Also I feel stupid for saying this but I didn’t get the whole Goldmember gag. The entirety of the joke appeared to be “Dutch people have funny accents”?