Dang, this really resonates with me. The lack of sincerity to a game's world kills so many franchises in my eyes. I think the Yakuza series looks great, for example, but then I see clips of men rolling around in diapers, talking chickens, and panty related side quests and my interest is gone. I just can't take the world serious so the whole thing falls flat when an actual story is trying to be told.
Stephen King released a fantasy novel last year, Fairy Tale, and it was my favorite book that year because, while having SK's style of humor peppered throughout, was overwhelmingly serious with its world. It presented a handful of interesting ideas that could only work in a traditional fantasy setting and played them straight. Every peak at the larger world outside the main character's story was truly fascinating and I spent a lot of time just fantasizing about the world, something I haven't really done since I was younger. I don't think I would've been as invested if everything was a constant wink at the reader to fantasy cliches.
No real point to make, I just really liked that book lol. Writers are free to do whatever they want, I just like when they take their creations seriously.