One thing that everyone seems to ignore these days are that certain settings are inherently not diverse.
Until I was about 12 I didn't see non white people in real life except on holidays and once when I followed a relative who visited a refugee family.
Not because we avoided them, but because they weren't there.
Background: The country I lived as a child in didn't have a recent (last ~900-1000 years) history with keeping slaves and only recently experienced high living standards so there were few immigrants too.
In the large district I grew up I am aware of two non western groups until the Balkan wars in the 90ies: a single middle eastern guy who I can't recall meeting and a southern American family who I only started meeting after I changed school at some point.
For me, it is annoying that people insist that all pictures include some non-Europeans, because reality is not like that everwhere.
I imagine the same is maybe even more true for African or Asian communities.