Maybe Blizzard is going by Family Guy FCC standards.
"As we all know, when one person finds something offensive, that means it offended one billion people. Ten people complained about that NPC and found it offensive, which means that it actually offended ten billion people."
I agree that it sucks, but to be honest I would blame the people who continue to whine about everything. Blizzard has no choice but to change things because of complaints. Some changes are easier to implement than others, and sadly this one was very easy to implement.
I think we should make a complaint thread bigger than theirs stating our distaste about the change. maybe they'll revert it? I doubt it, but one can hope.