From my perspective, one should not even really "need to know" the rules by default, but rather know of their existance. I mean, they are set to deal with things that shouldn’t be done here, and while the default personal behaviour should rarely encounter a breach in the rules, it’s cutting corners that often leads to then not being met. Plagiarism is I believe the main cause of account ban, along with nuked/banned accounts often for a track of spam/unsubstantial posts. Those are cutting corner behaviours, looking for a quick buck and or merit.

According to @suchmoon’s post on account ban (see [MERIT][NSFN] We're destroying more merits than we're sending. Like, way more), during a measured month period, there have been 6.704 permanent bans, 4.228 of them being Newbies ,and another 1.244 Brand New (there are also bans at all other rank levels, but in lesser numbers). On the other hand, there are 1.200 account created per day on average (official stat state a third of that, but 1.200 is the right figure lately looking over recent accessible data).
It those two figures kept a steady pace, it would mean that around 14,88% of Brand New and Newbie created accounts get banned on a monthly basis. That is quite a high figure, but if we spin it around, 85,11% don’t.

There are two conflicting strengths on the forum: post quality and campaigns quotas. There are people more lenient to one side than the other (some decent hybrids too), and that determines how one proceeds on this forum.