Thanks Azure. I edited the original message to point out the profile...
Okay, I was afraid that hiding might not work. I'm fine with editing the WikiData instead. I was partly trying to test-drive the instructions for handling these suggestions...
If there's no Wikipedia article, its not really being added to the profile because its a source, so I'd rather edit the wikidata. Most of the PGM suggestions are coming from ThePeerage or Genealogics (another user created site), and I think the majority of those don't have Wikipedia articles.
Do you know, is it enough to add the WikiTree ID or do you have to add the reference for the Parent-child relationship? I'm finding a large number of these suggestions where both parent and child already have WikiTree IDs (but I can see that the WikiTree wikidata doesn't reference the relationship).