What exactly is the benefit of being held accountable for having an ignorant opinion? On Twitter especially, many people won't forgive you for saying something stupid, and won't accept you changing your mind later. What sort of things 'should' haunt anyone?
Let's clear the euphemism up first: ignorant opinion is not the same as racist remarks - and this case was about racist remarks.
Let's deal with the false assumption next: whether people forgive you for saying something stupid is up to them - you're accountable for what you write.
Let's deal with the implication that I'm responsible for haunting someone next: if you post something on the internet, chances it'll haunt you forever. I'm not a part of that process, that's just how the internet works.
You are still responsible for what you write online, and being held accountable is part of that.
Let's deal with the false assumption next: whether people forgive you for saying something stupid is up to them - you're accountable for what you write.
Let's deal with the implication that I'm responsible for haunting someone next: if you post something on the internet, chances it'll haunt you forever. I'm not a part of that process, that's just how the internet works.
You are still responsible for what you write online, and being held accountable is part of that.