If you Announce(Object) are you not following FEP 1b12?

This is a spin-off discussion from today's ForumWG meeting

At today's ForumWG meeting, @trwnh@mastodon.social mentioned that Announce(Object) is something that Hubzilla and Friendica do, but the proper FEP 1b12 behaviour is to send out Announce(Activity).

I noted that NodeBB actually announces the Note object itself, instead of the activity, and provided some context that Discourse (via @angusmcleod@mastodon.social) originally expected Activities, but now also accepts objects (implicit create) for compatibility with NodeBB. Likewise, NodeBB also added some logic to handle Announce(Create(Note)) for compatibility.

Would Announce(Object) be considered a "variant" of 1b12, implemented within the spirit of the FEP, but not a technically compliant implementation?