Fedi platform feature: original post downvotes blocked from those who have not commented or upvoted an existing comment

I’ve not studied the ActivityPub protocol much, and certainly not examined the voting API. My question for those who have:

Is it possible or easy for a platform to suppress downvotes from users who have not first satisfied either of these preconditions:

• created a comment in the thread being downvoted; OR
• upvoted a comment in the thread being downvoted

?

And perhaps more complex, cancel the downvotes of cheaters who would circumvent the above policy by making a temporary dummy comment, downvoting, then deleting the dummy.

Voting is a shit-show on Lemmy. I wonder to what extent the ActivityPub API is the culprit or if it’s an implementation specific problem.