Nobody ever says "I just don't want a new housing unit there". Every single one of those groups has some kind of justification for why they don't want new housing near where they are. Some say it's to prevent "Rent Seeking Developers", some say it's to improve the quality of local parks, sometimes it's because the unit they are replacing adds some "special character" to their block. In the end though they all have the exact same goal and same effect. It's all NIMBY bullshit, everyone is for affordable/ new housing unless it impacts them in the tiniest way, then suddenly they are against it.