Laravel's many-to-many polymorphic relations can be complex when creating a tagging system for posts and videos, but with the right setup and relationships defined in Eloquent models, attaching and detaching tags is straightforward using `attach` and `detach` methods. A tagging system seamlessly integrates with both Posts and Videos by defining three tables: the original model (Post or Video), the pivot table (tags), and the polymorphic model (taggable).