I'm under the impression the reputation points are either the combined number of upvotes or that minus downvotes
IIRC from kbin -- and assuming mbin didn't change things -- boosts counted for two points while upvotes (favorites) are one point and downvotes (reduces) are one point. Boosts are basically retweets, IIRC, and wouldn't be coming from lemmy users -- just from Mastodon, mbin, and other tools that support it.
Edit: To clarify, I mean downvotes reduce by one point.
I'd say for this one specifically, !degenerate@lemmynsfw.com is probably the right venue.