I don't think this feature is necessarily terrible, it's just really expensive to compute relative to its value. It looks like it's taking ~20-30% of homepage time on my local machine. If I fix a few other problems so the rest of the page gets cheaper, that could climb.

I'd rather have a 25% faster homepage than have these counts, and I'm not sure if it's worthwhile to spend hours making these counts faster and then maintaining the caching given how little value I think they provide.