The park was original about movie magic... and celebrating hollywood. The only part of the park that was themed to be constrained to a time/place was the entrance area. The rest of the park was setup to be like a movie studio. Later they added sunset blvd which expanded the themed area.. but the rest of the park still about movie magic. Areas were setup like soundstages, movie lots, etc.
The discussion about DHS and identity is not about things you would be accustomed to for MK/DL, where there is something that looks out of place, etc.. but is about the park continuing to try to be about movie magic and the making of the movies when the studios portion is dead, and most of the movie magic attractions are long gone.. mostly replaced by attractions simply celebrating movie subjects.