After reading this:
https://helpx.adobe.com/xd/help/share-selected-artboards.html#modification-of-existing-wiring

It's blindingly obvious that the way single artboards are shared is flawed and creates more work than it saves.
If I have a fully prototyped document but I want to share a single artboard from it, this involves either splitting it from the document or duplicating the artboard in question and manually removing the unnecessary interactions.

Either way, it's more work than it should be while it also creates issues with consistency across designs and having a single source of truth. Using components, in this case, doesn't help as if there are any interactions in the main component they will remain, often navigating away from the artboard you're trying to isolate.
The solution would be as simple as automatically removing any interactions that navigate to boards that haven't been selected before sharing.

I can't believe that this needs to be explained here.

Alternatively, now that Figma is part of Adobe, just kill XD and let the better software prevail...