It is also important to mention that Lido contributors are working on the ERC for the core part of EDF. The primary reason for it, as @Raman_Siamionau mentioned, is to allow any on-chain protocol to use some form of EDF contracts instead of EOAs.
With EDF, an entity deploys an instance of the delegation contract, and protocol maintainers verify the deployment and parameters used. If all sounds, a permission is granted to the contract. Any future rotations of the EOA delegate are maintained by the entity and not the protocol. So stuff like periodic rotation, emergency delegate rotation/termination, etc. are maintained by the entity, not the protocol.
PS. Sorry for the not polished language. I did not use AI to write it. lol