Current models have undergone massive amounts of RL to "get shit done." There's incentive toward reasoning, but probably little toward elegance. Every engineer is familiar with the impulse to just hack things together.

But this need not be a permanent state of affairs. The model labs are probably already examining the elegance problem, since it is such a common complaint of researchers reading these machine generated proofs and papers. And I haven't seen anything disproving the notion that elegance can be RL'd.