I mean Im not arguing against that at all lol, but most people today started with Fallout 3, so unfortunately whether yall like it or not that quirky silliness that is iconic to Fallout is what most people think of for the series.
Even though I prefer FNV, F3 is the first game I played like many, and its a lasting impression. Hell even FNV isnt fully void of that. Despite the seriousness of the setting story and situation. And yea I know you arent against any comical relief, but Im saying that its an overbranching theme with the series. Tbh even 1 and 2 from what I have seen has this to some extent, there is much humor to the series that imo makes such extreme scenarios easier to swallow overall.
But thats just my opinion.