There is an _actual problem_ that needs to be solved.
If you ask generative AI for a picture of a "nurse", it will produce a picture of a white woman 100% of the time, without some additional prompting or fine tuning that encourages it to do something else.
If you ask a generative AI for a picture of a "software engineer", it will produce a picture of a white guy 100% of the time, without some additional prompting or fine tuning that encourages it to do something else.
I think most people agree that this isn't the optimal outcome, even assuming that it's just because most nurses are women and most software engineers are white guys, that doesn't mean that it should be the only thing it ever produces, because that also wouldn't reflect reality -- there are lots of non white male software developers.
There is a couple of difficulties in solving this. If you ask it to be "diverse" and ask it to generate _one person_, it's going to almost always pick the non-white non-male option (again because of societal biases about what 'diversity' means), so you probably have to have some cleverness in prompt injection to get it to vary its outcome.
And then you also need to account for every case where "diversity" as defined in modern America is actually not an accurate representation of a population. In particular, the racial and ethnic makeup of different countries are often completely different from each other, some groups are not-diverse in fact and by design, and historically, even within the same country, the racial and ethnic makeup of countries has changed over time.
I am not sure it's possible to solve this problem without allowing the user to control it, and to try and do some LLM pre-processing to determine if and whether diversity is appropriate to the setting as a default.