I have a general lesson from this question that is more general Unity knowledge than lesson-specific, hope that’s ok!
If I set up a game object with the exact same components (i,e. setting up a circle sprite with the collider and rigidbody components) as a premade option (i,e. the dynamic sprite option), is there any actual difference between them?
There won’t be any difference between them, assuming the settings in each component are the same. (For example, the size of the Radius for the Circle Collider 2D.) The value of using the Dynamic Sprite in this lecture is simply that it saves a few steps in adding those components manually to a regular Circle Sprite. 
Good to know! Thanks! 
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