Preferably threads in that sub should be about definable communities that are focused on very odd interests or communities that have an absurd amount of internal drama where people act like lolcows. Besides culling the fandom threads and restricting them to being about very specific websites to exact qualification is a lot of times quite loose - some community watch threads function based on a wider topic such as "Furries" that spans multiple furry sites / happenings so there doesn't have to be a thread for every single one.
I think some of the politics-based threads should be given the axe if anything, with valid threads being moved to Deep Thoughts / E/N.
The White Genocide Nutjobs and Alt Right threads have been similar to the Anti-Vaxx crowd we moved to Deep Thoughts because it was less about Lolcow-y behavior than talk surrounding the subject. Similarly, threads on politician fanbases are fairly iffy - while things like LionsofTrump and /r/Sandersforpresident are definable communities where Lolcow-y behavior or drama happens, they often boil down to politisperging.
Some of the political threads that haven't produced any actual Lolcow content and have had more to do with politics (or [subject matter] sperging instead of the actual intended lolcows) are probably ones that should go. White Genocide Nutjobs thread was recently a target of an expansive cleanup but because there was no clear impetus from people wanting it moved, it was given a new chance. But since then it has generated almost no replies, which makes me think it would probably be better off at Deep Thoughts.