He never used the addon again. He deleted the file. He even wiped the skupkamcaddon folder from his .minecraft directory.
Unlike simpler mods, this addon often inherits the mob's traits. If you morph into a Blaze, you can fly and shoot fireballs; morphing into a Bat allows you to fly and fit into small gaps.
Whether you want to terrorize your friends as a giant boss mob or spy on them as a tiny bat, the "Morph into Anything" addon adds a massive layer of fun to Minecraft Bedrock.