That content is only kind of hidden. To hide it completely, you have to change your settings. My idea is to hide nsfw content completely by default. In other words, you would opt in to show it rather than the other way around.

I don't really care that much about the issue as far as my personal viewing habits are concerned. I'm more concerned about other people that I might recommend Steemit to. As it is, I have to be kind of hesitant about it because of the porn issue. Some people will freak out if there is even a small probability that their kids might see some porn.