@clacke doesn't nätter what the default for a WebFinger request is because the RFC states that the client MUST provide content type negotiation.

That's why the fallback default for !gnusocial is an XRD, because it's much more parsable.

And yes host-meta lookup was unfortunately removed but that doesn't matter since WebFinger can still reply with proper offsite URLs for the various feeds, such as updates-from etc.