Hilarious coming from someone who used to work at Reddit. Apart from blatantly illegal stuff, the one thing most likely to get a subreddit in trouble with Reddit's Anti-Evil Operations is allowing open debate about whether trans women are women. Even if the mods take every effort to make rules and remove posts calling for violence etc. and merely allow debate over whether or not they are women, they are guaranteed to run afoul of the AEO team. There is a subreddit I frequent that allows this, and the mods there are very transparent about when the AEO removes posts, and it is pretty much always posts about whether trans women are women (the remainder of ones that get removed by the AEO tend to be people arguing about lowering the age of consent, but the ratio of trans to aoc posts that get removed is like 10:1).