Sure there are goals -- but the problem is, you can't make automated tests for them in the same way as you can for (many) software engineering outputs. So you can A/B test something for conversion rate, and find that instead of getting more conversions, it damages your brand. Or it gets more conversions AND damages your brand. And maybe brand damage is frankly not the worst thing in the world with some demographics, but is catastrophic for other demographics. And even if you were okay with doing this kind of A/B testing in the wild, how do you even instrument for everything that matters, anyhow? Your first port of call for security wouldn't be to do an A/B test on how hackable you are.

These sort of issues are what you trust the judgement of a good designer to navigate through. I have no doubt that Claude Design can be better than no designer, and probably better than a bad designer, too. But better than a good designer? I'm more skeptical of that than I am of software engineering.