When was it ever about improving it for the end user?
back in the day when it was about building the best interface you could to last the product lifespan, maybe.
that’s not profitable for the designers tho - chasing the current design meta is their version of planned obsolescence for interfaces. “oh that interface looks old so it doesn’t work anymore” - statements dreamed up by the deranged and greedy.
they’re often built for investors. they are feasible enough products that some people will even buy them, so you get investors. then, the thing is always just “one more issue we need to fix” away from “mass adoption”, “for real this time”… to keep milking the investors as long as possible.