It's clear from his rambling, four-part account that he does not even understand the breadth of the mistakes he made, and has not even begun to own up to them and rectify them. That's not the type of person I'm keen on forgiving. Let's see a legitimate, heartfelt apology and acknowledgement of the problems he created first, and then talk about forgiveness.
In truth, he has made or defended multiple racist statements in these very posts. I really don't think we're all going to be vulnerable to shifting public opinion if we understand how and why said opinion shifts, and I think it's clear from how the vast majority of people do not have any trouble understanding how to behave in the workplace and never face this comeuppance, that this is an overblown, slippery slope concern.
It really is a tiny minority of journalists and academics getting themselves into hot water with their inflammatory, bigoted statements and stances, and they generally had it coming when the consequences arrive. That's my take. I'm not concerned about this, and stories like this guy's do not move me.