@GallonmateYou can’t distribute UE4 editor freely outside of github fork due to the licensing limitations. There are two ways to get modified Unreal to people: either via fork from official repo or binaries distributed via Epic Launcher, which they don’t offer for custom builds like these, they only offer service for select partners that wish to add modding option for their game and custom UE4 engine version is then distributed through Epic Launcher by Epic itself.
Even if self hosting was allowed (which it is not), most people wouldn’t have even resources to host amount of data for others while providing it for free. Github fork with source code distribution is only viable option.