[happytoexplain]

These reasons are used mostly for dense projects like apartment blocks, not small homes.

There are, on the other hand, plenty of reasonable objections that arise from the nature of dense housing in certain areas, rather than from people's race/class/etc. Sometimes development projects really do destroy nice lower-middle to middle class communities (consisting of exactly the homes the parent is describing), that people have worked their whole lives to live in (one of the last remnants of the simple version of the American Dream).

Developers are no more rational/benevolent than governments, and therefore not everybody who has opposed any one development project is a villain who is racist/elitist/immoral in comparison to you.