LOL. I think that the WordPress AP integration is broken:
https[://]blog.troed[.]se/.well-known/nodeinfo
returns a properly formatted nodeinfo response pointing to
https[://]public-api.wordpress[.]com/wpcom/activitypub-1.0/sites/861438/nodeinfo
But that URL returns a 404, so until that's fixed there is nothing that FediFetcher can do.