Aye–in at least some cases. (I am responding to the matter “Only those with an account on this instance should vote on the Agora.” I am seeing a bug where if I scroll down then back up, I see the title and body of a different post, so if this goes to the wrong place, mods please move it to the correct place)

I can foresee some issues that might be open to vote by everyone on Lemmy, and those that should be open only to members of this instance. A vote to allow or ban certain types of content (say, porn or gore) should be restricted to the membership of the instance, with owner/admin having authority for absolute bans on grounds of “hosting that content is illegal where this instance is hosted” or similar grounds. Perhaps a vote to remove a moderator might be open to all users on the grounds that members of other instances may be active contributors and have a genuine stake.

So I vote Aye to restrict instance policy votes to members of this instance at least some of the time. I would also vote that anyone from anywhere can share discussion and opinion on any topic even if they may not cast a vote.