If we take their claim that it was an "automated removal" at face value then it looks like their approach to clearing the trash is to have an automated check for keywords and silo everything it tags into an offline state (hence the DEI URLs and 404ing pages), then go through and review everything there manually and restore the records that actually deserve their place.

It's probably a good approach when you're dealing with malicious compliance and deliberate go-slows. Now they can't stop you removing their propaganda by dragging their feet, they can only slow people's well deserved public honors being returned.