It's OK to care about what's going on around your home and in your community. "NIMBY" is usually meant to imply that they are being unreasonable in their complaints.
At the individual level, I agree. Generally unfair to have some unzoned private school next to your house shuffling in people constantly. Though I doubt this would get much press if it weren't Zuck or the NIMBYs who can probably pull strings to get a story in the press about their harrowing plight and tormented lives (not saying that's what happened of course, and perhaps the neighbors aren't NIMBYs--who knows)
As a group though, I think Zuck and any NIMBYs deserve each other
