I think this is what makes Fallout a love it or hate it setting.
Fallout tells often whimsical stories against the horrific backdrop of nuclear annihilation, and that’s what gives it it’s charm IMO.
I actually feel like it’s more realistic in a sense than overly grimdark settings. People are goofy, and with over 200 years since the bombs fell it’s believable that people will have some laughs and some motivations other than pure survival.