For example one of the top r/aviation posts is a meme about airbuses with "slutty eyeliner" (87k points), and it far outpaces shop talk type submissions like "why does the landing gear not get retracted at the same time on this 777?" (2k points)
Yet political posts get +2000 out of nowhere and an influx of commentators who don't usually comment in that regional subreddit or don't even likely live there.
The top post of all time on r/toledo is about a police officer harassing a woman. It's highly engaging but not overtly political. It has 100x the upvotes of a normal r/toledo post about traffic or what have you.
One of the top posts of all time in r/sanjose is a video of someone trying to jimmy a hotel door open using a hook contraption. Highly engaging, not overtly political.
These were the first two city subreddits I checked. It's literally just how reddit works, highly engaging content bubbles to the top and can reach a much larger audience.
Either this is the design of the black box "algorithm," or it's not real engagement. There's no need to miscorrect me about something so hamfisted and overt.