It's stuff like this that makes me wonder why the number of dipshits on the internet seem to outnumber the dipshits in real life. These are all people, and they can't seriously think that this is okay. Then I remember people like the Wesboro Church and the KKK and Stormfront and I give up.
But I agree, as some have said before, this is not exactly a rare occurrence. Granted, this is a gaming website so it tends to cover such instances in their relation to the industry, but this isn't even a particularly horrendous example. Good on the execs though for responding with dignity, which is all you can really do. I'm pretty confident that this is just a type of people whose knee-jerk reaction is to rage and type death threats rather than really think about anything that's being said. Doubtful any of them actually noticed the changes, they just read that some of their stuff was being nerfed and got angry.
We can try to shout them down, but I won't hold my breath for a success. These people can shout back forever and never change their stance, at least some of them, and even if some of them calm down after the core of the problem won't be solved. Short of policing the entire internet I don't know how to prevent stuff like this, and no one had better start that. Forums like these have moderators where such people can be warned and banned, but in open and unmoderated places like Twitter there's really no way, short of ignoring it. We should all just try harder to make this pass, and not take these threats seriously. It will keep happening regardless of what we do.
Of course, shouting back can be fun from time to time.