Where to begin with this? First, let's acknowledge that there are animated movies like _Up_, _Shrek_, and _Toy Story_ - just to name a few - that have depth and will live on as classics; then there are the other ones, like _Hotel Transylvania_, and this, that will... not.
So, why is this? Well, almost every part here is wrong: there is an insulting level of jokes that don't work - I think I laughed once because of Uncle Fester. None of the music makes sense, it's just an excuse to have terrible pop songs shoved into a film. We get name drops of Billie Eilish, Beyonce, and Taylor Swift (I feel dirty even typing their names). Is there a musical scene with dancing? Of course there is. However, on top of all of that, the worst is how the family dynamic is completely wrong. The people who made this don't understand The Addams Family. The original television show got almost every aspect right, and the 1990s movies are close to perfection. The irony here is The Addams Family is all about not fitting in, but the makers of this movie have done everything to conform and make another by-the-numbers kids' movie.
If I can give any praise, it's that the character design is perfect as a faithful update to the original Charles Addams drawings.
The voice acting is okay, I mean, these are big names here. Nick Kroll is the obvious stand out, it's clear he was having fun with the role. None of that matters when the story is weak, and the dialog is one bad joke after another.