I’m getting WWoHP at USH flashbacks seeing the results. I think this has been touched on before on this thread, but SoCal parks rely heavily on their locals. Once the pass blackouts are lifted, expect the crowds to show up.
Though WDW may be a different beast, I think the wonky scheduling of opening up half the land in the Fall and bumping Runaway Railway to next year is causing a lot of tourists to delay their trips. Maybe this will teach theme parks everywhere to open everything with the land instead of trying to milk things dry with a partial opening.