I’m going to claim this is progress.
People like Limbaugh and O’Reilly (or at least their listeners, Limbaugh is more cynical, vicious, and venal than ignorant) have lived in blinders all their lives. That’s a lot of people with the white privilege of denying American history. We’re not the only ones who do this of course. Japan has had a bit of trouble with its history too.
Now the blinders are coming off. Americans, especially those who went to high school before 2000, are learning more of the nasty bits of American history. If you’re a white American it’s a disturbing experience. So now we have “get over it” and “the housing was good”.
But this is progress. It’s the difference between, say, Holocaust Denial and “that was long ago”.
Progress doesn’t mean things turn out well. These are truly scary times. But absence of progress is worse.