Making a political donation toward a popular opinion (7 million people agreed with Eich) means that you are socially reprehensible?
I disagree with him, but I would not let a dissenting opinion on a single controversial political subject lead me to conclude that a person is "reprehensible" in any way.
The difference is that Eich never actually apologized, or said his opinion changed. It was always, "Don't worry, Mozilla will be fine!" He argued that accepting bigotry is a form of inclusion. So, all signs point to him remaining a bigot.
Ironically, pretty much all of us are bigots in various ways, we just don't know it because we believe we're right. Eat meat? Drive a car? Pay taxes to a militarily aggressive and murderous government? Buy luxury goods while poor people starve, even though you could have saved them with the same money? Think people should be prohibited from earning money if they weren't born in the right place or to the right parents? Opposing gay marriage is buried in a giant smelly pile of bigotries.
So, I agree with the X-parent saying it's wrong to kick someone out for supporting a popular and controversial political idea. It really isn't clear what the truly right answer is, and those same people doing the kicking will be holding "wrong" opinions in other areas.
I disagree with him, but I would not let a dissenting opinion on a single controversial political subject lead me to conclude that a person is "reprehensible" in any way.