As I said Pax, stop making your own rules.
I'm not. I'm pointing out the different levels of crimes in canon law. You are simply generalizing the crimes.
Per canon law (you can look it up) normally, confession is all that is necessary
See? You're using the word "normally" which is the general rule. But this means that there are cases where confession IS
NOT ALL THAT IS NECESSARY. There's more required in order to obtain forgiveness.
Martin Luther could not simply go to confession and act like the 99 thesis he nailed to the church door didn't happen. He was summoned to a meeting to be interrogated for his heresies, as his crimes were extreme.
- unless the confessor or bishop require a public abjuration, or, if the penitent is a new convert.
Or if the penalty requires a special forgiveness from the roman official, or a roman judge, or the pope himself.
Again, there is the general rule (which you hyper-focus on) and you are forgetting all the exceptions and other special cases which are contrary to the general rule.
You do this all the time. Admit that the general rule AND exceptions exist. You can't pick and choose. It's both.