You have strong feelings about this topic, and I respect that. However, I've watched NIMBY arguments for a couple decades now and they are all basically the same: fear of decreasing home prices due to visible nearby infrastructure improvements justified by hard to prove allegations of harm to the community.
It's basically greed mixed with selfishness - deny the community improvement for the sake of my portfolio. So, if it's money they care about, then throw money at them. There's a break-even point, of course, where the bribe exceeds the benefit of the improvement.
You'll notice that I never suggested that improving the buildings was mutually exclusive with paying them off. Do both! Make the buildings quieter or less allergenic: try to address the complaint de jour. However, realize that you're treating a symptom, not a cause.