EPEL Playground was shut down in January 2022
EPEL 8 Playground was a place that developers and maintainers could "play around" with updated, or changed packages in epel. EPEL Playground never really worked out and ended up being more of a burden than helpful.
If developers or maintainers want something similar to EPEL Playground we recommend Fedora COPR[1], which has availability for EPEL builds.
The epel8-playground dnf repo's are still on the mirrors so we don't break machines that might have them enabled. They will eventually be archived and removed. If you know of any machines that might still be getting updates from epel8-playground, please disable the repo.
Troy