Literal NIMBY-ism, where the backyard is one's own property, is just straightforward property rights. They want to control other people's property and tell them what they can and can't do with it. That's basically communism.
The key problem of US housing is that a house is seen as an investment vehicle, which should appreciate, or at least appreciate no slower than inflation. Keeping prices high and rising can't but go hand in hand with keeping supply scarce.
Is this regularly true? IME, in Northern VA, land values have always increased with infill development. Thinking specifically of Arlington in the Courthouse/Ballston/Clarendon strip in the 90s and 00s. And now Reston.
Traffic and noise concerns might be legitimate, but I'm not buying the loss of value argument.