The immediate example of something where good code DOES stand out to me is (one of my favorite games of all time) Factorio. There are lots of examples where I have been playing over the years and been amazed at the ability of the game engine to handle computationally complex operations at a really large scale. Coupled with a bunch of dev blogs explaining the little optimizations, its given me a ton of respect for Factorio as a piece of software.
That said, I am not sure it strictly invalidates your point. That’s the only example I can come up with, and it requires knowledge of the game’s design via those devblogs which the average user of a messaging app or something won’t have.
I think there’s probably a market for high performance consumer code, but the vast majority of what makes it to end users will just be good enough.