Hint 5on´t worry about being a bad boy.
It just means they're removing Badboy as a game system, could apply to either game as both featured many instances where badboy wasn't appropriate, for instance, for EU4 annexing countries in Asia shouldn't really bother europeans at home), and likewise, Rome largely consists of conquering barbarians, which wouldn't give badboy either.
+1 Rome 2, +0.5 EU4
It means they're using the CK2 system where the AI likes or dislikes you for specific reasons. Meaning your crusading won't cause you to gain infamy with everyone on earth in the exact same amount. Catholics will clap for you while Muslims will shun you severely for your efforts, for example.