Thank you for reporting a bug to Unity.
After reviewing the behavior, we've confirmed it aligns with the current design and intended use of the feature. We understand this may differ from your expectations or workflow.
The RayCast Binder is part of the VFX Property Binder system. You can attach additional binders if needed. For more information, refer to the Unity documentation: https://docs.unity3d.com/Packages/com.unity.visualeffectgraph@17.0/manual/PropertyBinders.html
We will close this case as 'As Designed.' If you have feedback on how the feature could better meet your needs, please let us know - we value your input and consider it in future improvements.