why should an intentional murderer without hasra have a better outcome than an accidental killer?
The purpose of Hasrah is to inform the doer of the punishment. WE can not punish without warning what it would be. Also Hashem does the same in His Torah, where for all punishments, there is the “Lav” and the “Azhara” (the law & the warning).
That being said, 80 is as usual 100% correct. Punishment in Yiddishkeit is not “Lehachis”. Just like Gehennom, it is a needed cleansing of the soul, like scrubbing a stain off a shirt. If the stain is too strong, there is no need to scrub, as it will not come out in any case.
However, there is “Kipa” for those who Bais Din decides that their being in society will harm others.