CSP is literally in this release, and background workers are intentionally not part of Django because you usually want to offload tasks to other nodes so your CPU can keep serving HTTP requests.
Edit: Background tasks for light work are also included in this release.
My point was that these features that are considered new and exciting have been standard in Rails for many, many years. There are many _other_ features that Django still lacks!
I don't understand your point about the workers, since you argue it doesn't belong in Django, but then in your edit mention they have been added. To be clear I'm talking about a worker abstraction, not actually running the workers pods themselves.