People can and will bikeshed about any subject, this is about a core tenet -- the contradiction of which, would, at most charitable interpretation, be nominalistic.
>Unitarians generally reject the doctrine of original sin.
I agree that basically that if you do a random sampling of Christians the odds are likely somewhat greater than 99% while still less than 100% that anyone you pick will believe that Jesus saved humanity from sin and salvation is related to accepting his teachings.
Some will also say salvation is accepting his teachings and divinity, and some will say salvation is accepting his teachings and divinity and doing good works as well.
But not everyone will believe in original sin, and as such they may believe that you can be very good and still be saved without accepting Jesus.
This of course answers several common complaints against many Christian faiths that a good person who lived all their life following Jesus' code of conduct without knowing who Jesus was would not be able to be saved.
I don't have any particular side of this fight, as I am an Athiest, although relatively well read in theology (at least when younger)
On edit: also note that there were probably sects of Christianity that were deemed heretical in former times and wiped out that differed on this part as well, it is my understanding that the Adamites https://en.wikipedia.org/wiki/Adamites did not have a doctrine of original sin and Jesus' death being necessary for salvation.
