makes sense but for me it just feels like it's built around being a masochist because some passives i believed should be sadistic but its on the masochist passives, like excessive confidence
If you look at it from a game mechanical standpoint, instead of how the content has been filled. There are 244 passives that has ties to sadism, and only 104 that has ties to masochism. So the game in more leaning towards sadism... but...
Mind you, the broad definition the game uses is that sadism is you doing something to others, and masochism is others doing something to you.
You can do 1 thing, while you can have 3-4 things done to you in parallel, so it probably balances out, and therefore both are roughly equally hard to obtain.
That is also why it is difficult to either a complete masochist or sadist, the easiest, and what the game pushes, is you doing something while something is being done to you.
About the excessive confidence. The most important part of sadism is being in control, if you have excessive confidence, you have actually lost some control, so it should not be part of sadism. If it should be part of masochism... well I don't know