There's lots that's interesting to me about this but one is how links provided by subreddits themselves might or might not reflect actual related topics. There's a couple of subs I'm familiar with that have relatively large related subreddits I wasn't aware of before, that aren't linked to or mentioned. Maybe in some cases there's political histories I'm unaware of?

The new reddit design is so problematic in so many ways. So many of the "related subreddits" sidebars (all?) are just eliminated in the redesigned site.