Well Beehaw’s rational is explained in this thread.
The reason I wanted to downvote was because Reddit communities like GameDeals is one of the new equalization I cannot easily find on Lemmy.
Thus, I found !gamedeals@lemmit.online / https://lemmit.online/c/gamedeals. It uses a bot to scrape the content from Reddit, but the scoring and popularity is missing.
When I joined there were only 13 people subscribed (now it’s 150+). If I’m limited to upvotes, it was difficult to “vote for the threads I liked” vs “vote for the shovelware” that appears in that channel.
With downvote, I was able to downvote shovelware and upvote threads I thought others would be interested. Everything else would be left as neutral.
Ah, I see this is the predecessor to the Blue Shell in Mario Kart