I think they both tie together... the thing is, extremism and toxic behavior is not what a lot of people are looking for when it comes to social media (as seen

I think they both tie together... the thing is, extremism and toxic behavior is not what a lot of people are looking for when it comes to social media (as seen by the top group lists). However, toxic personalities often are very loud ones, and they often get out-sized attention by the press. This can negatively affect an entire site if one isn't careful. Porn offends some people as well (and is not meant to be viewed in certain social scenarios, of course). Reddit has a "safe for work" and "not safe for work" category, and as far as I'm concerned this dividing line is probably better than the no-nudity-period type policies of Facebook (which leads to dramas over non-pornographic nudity, eg breastfeeding photos, a famous Vietnam photo, etc.). It seems like cute pictures and jokes drive more growth to me at first glance then porn, anyways. Managing "toxic behavior" is a lot trickier, from what I see -- over-heavy moderation also can lead to issues. But "growth at all costs" social media, without checks, leads to factors such as bullying, abuse, and harassment listed as negatives in articles on your growth prospects.