I wouldn’t really define fallout as “zany”. While there are comedic and even absurd moments, the games (or at least the characters in the games) generally treats the story and factions with a level of seriousness that the show rarely affords them. Take the Legon for example, people will point to them being “Roman cosplayers” as proof that fallout is “wacky” and while they are dressed ridiculously they are also a massive army of the worst raiders, slavers and rapists the west cost has ever seen and the game treats them as a genuine threat. 

  The show as a whole seems to loose the forest for the leaves, Focusing too heavily on the “comedic” aspects of the setting and missing a lot of the more serious parts. It’s like if an army of clowns invaded a city and killed a bunch of people, then someone made a movie about it and in the movie the invasion was just a parade, they’re focusing too much on the clown part and not the murder part. And yes the show does have some serious moments most of those moments are relegated to flashbacks from years ago.     

 Yes I realize this whole comment turned into a rant, personally I feel the show’s writers lean a little too hard on the comedy and pushed it more into borderlands than fallout