IMO it's more convenient to add a plugin in order to add addational functionality to an Unreal project than to copy another project's content folder into the content folder of one's own project and It's also less error prone: The first time I copied your content folder into a subdirectory of my content folder, which broke your assets' dependencies and nothing worked anymore. Copying your content folder again into the root directory of my content folder worked, but if I wouldn't have read a comment on the unreal stating that this is still UE5 compatible I would've just assumed your work has been deprecated. If this were a plugin, I couldn't have even made this mistake.
IMO it's more convenient to add a plugin in order to add addational functionality to an Unreal project than to copy another project's content folder into the content folder of one's own project and It's also less error prone: The first time I copied your content folder into a subdirectory of my content folder, which broke your assets' dependencies and nothing worked anymore. Copying your content folder again into the root directory of my content folder worked, but if I wouldn't have read a comment on the unreal stating that this is still UE5 compatible I would've just assumed your work has been deprecated. If this were a plugin, I couldn't have even made this mistake.