A few angles on this:

You’re right that nothing is unimportant and I certainly enjoy it when I discover that attention to detail, but part of what makes that special is knowing that they put in extra effort into that. Acknowledging it as something that takes effort, we have to recognize the trade offs associated with that effort. Devs, especially indie ones, don’t have unlimited time and resources. So they have to prioritize. Choose your battles. What are the MOST important things that need to be in the game? What is required? Then after that if you have resources left and can control yourself from doing too much scope creep, then you can spend time on the lower priority things. If you can’t do this you might never release the game.

Of course, what is more or less important is subjective and context dependent. Subtle, intentional details might be more important in a game with a lot of environmental storytelling like Dark Souls, or a puzzle game where you want to be careful about how you direct the player’s attention, but is probably much less important in say, an action rpg where you’re just running through hoards of random enemies slamming particle effects.

Another thought I had related to the point about inspiration happening through the process: I don’t really do art anymore, (no real reason I stopped, might be fun again if I ever have the motivation/focus for it) but in high school I took 3 years of graphics design classes for art class. I’d finish whatever my assigned project was and then I just spent a bunch of time messing around in photoshop with random gradients, filters, and other effects. I wouldn’t call it super deliberate at least in the early stages, but at some point I’d end up with some abstract art that I liked and maybe tweaked a bit from there based on the things I saw from randomly trying stuff. I still use some of those for desktop backgrounds. I don’t think I could have ended up with any of that without some of the random stuff photoshop did. I could imagine someone using an ai image generation for similar kinds of inspiration. Although I can see how it’s also a lot easier for them to just stop there and not think about it again.