I think it's just a different focus on what matters.
There's clearly enormous (human) work that goes in to building and tuning their models.
The software they develop around their model is, relatively, trivial. It's not clear that enormous amounts of (human) energy need to go in to that code.
It seems largely a function of applying human energy towards the things that are marginally most important to generating you money and putting you in front of competitors.
I mean, sure we can assume that (although the Anthropic article from the other day say that claude mostly builds Claude) but this is the Claude Code team which, I again am assuming so I could be wrong, focuses on the TUI/CLI interface to those models, not necessarily the models themselves. That coupled with the fact that this is how a large portion of their clientele interact with their moat, it would be odd to me if they didn't apply significant work towards this thing to keep the hype or productivity train moving
>The software they develop around their model is, relatively, trivial
30,000 changes a day is not my idea of trivial.