Ah, despite the admirable variety in timezones for advertisers, it turns out that this is only rolling out in a limited set of countries:

    Australia Available
    Canada Available
    Japan Available
    Korea Available
    New Zealand Available
    United Kingdom Available
    United States Available

> If the same engineers worked on this that also worked on the ad deliveries, we're about to get either the best deal per click of the century, or the worst!

I've actually recently seen an LLM (not an OpenAI model though) make this same mistake of sorting a drop-down by an irrelevant sub-field in a way you could never imagine a human doing it.

Still says something about their development culture that they either never noticed, or didn't care enough to fix it.