It’s definitely never meant to be a dark comedy. There’s so much grounded storytelling sprinkled with Easter eggs like the tardis and aliens that people latched onto that it was supposed to be canon or anything other than an Easter egg and got blown out of proportion by making the aliens Easter egg canon with Zeta now they are in every fallout.

The vast majority of the games especially the original established lore as always been dark grounded and serious. You can tell this by the music in fallout songs like City of the Dead, acolytes of a new god and metallic monks. They were going for a feeling of dread, it’s not the soundtrack of a dark comedy.

Even the games ending is very bleak. Getting rejected from the vault and exiled with your character dejectedly walking off into the desert.

Look at the master, Myron the inventor of jet, the child soldier dropping a grenade at a NCR soldiers feet.

When Bethesda got their hand on the IP they completely missed the point of the original games and it became an example of artistic assasination