Eh, those same folks against density happily vote in another office park that brings in 20,000 new jobs. So I'm a bit hesitant to say they're getting density pushed on them. More like they're finally expected to pay for their free lunch.
Whether or not it's deserved doesn't change that it's still more people than the existing population who votes no wanted. Playing devil's advocate for a moment, the companies that built those office parks knew what the housing situation and politics were like before they were built and they agreed to the terms. They could've chosen a different location if they wanted to.