I think, that’s an example of excessive moderation. While I understand that most people will not be interested in the content that capitalistic institutions provide, I think, censorship should only be supported, where it is absolutely necessary, eg: disturbing things, abuse and crime glorifying content. I also think that most people won’t see their content, as they will not likely partake in car subs. And if they invade other subs comments, they can still be downvoted democratically, thus decreasing their visibility.