Old textbooks used to use white names. Now, many schools are required to throw out prospective textbooks that don’t have names representing multiple minorities.
In my experience, this is the sort of thing that, when un-cited often means "a school district somewhere had a proposed or implemented policy that, at its least in its least sympathetic interpretation, would require the school to do [x]" interpreted through a few layers of the outrage commentary telephone game.
Old textbooks used to use white names. Now, many schools are required to throw out prospective textbooks that don’t have names representing multiple minorities.