We downweighted it because it veered off topic and generic. That's standard moderation practice.
Thanks for sharing the internal workings.
I am top mod on a few large ("top 1% by size") subreddits and am always interested in those sorts of perspectives.
I have zero idea of what that would be like! But FWIW downweighting top comments that are generic tangents, or flamey, is probably the biggest thing we ever figured out about thread quality. I just wish it could be automated.