I'm following along with the tutorial. In the render properties, I changed the feature set from "supported" to "experimental," but I don't see the displacement
option in the object data panel. Is this feature no longer there, or is it an addon?
Oops I think they moved the location for this option in a recent version of Blender. Now if you have the "Experimental" feature set enabled, in the material tab of the properties panel at the bottom in the "Settings" dropdown, you'll see the Displacement option where you can change from Bump to True.