Wheels is an interesting analogy. Wheels are more efficient now that we have roads. But there could never have been evolutionary pressure to make them before there were roads. Wheels are also a lot easier to get to work than robotic legs and so long as there’s a road do a lot more than robotic legs.
People think the first wheel was invented for making pottery. Biological machinery for the most part has to be self-reproducing so there is a lot of limitations on design, also it has to be able to evolve, so you get inefficient solutions like the vargas nerve (i think that's its name), basically there's a really long nerve in your body that takes a route under your trachea and then back up to another part of your brain, in giraffes its something like 40 feet long to go a few inches shortest path.
Wheels other than rolling would likely never evolve naturally because there's no real incremental path from legs to wheels, where as flippers can evolve from webbed fingers incrementally getting better for moving in water.
I dunno, maybe there's an evolutionary path for wheels, but i don't think so.
We know there is a more efficient solution (human brain) but we don’t know how to make it.
So it stands to reason that we can make more efficient LLMs, just like a CPU can add numbers more efficiently than humans.